When Installing Steel Roofing, 5 Typical Blunders to Avoid
This advantage does not actually have an impact on roof products like metal, floor tile, and also slate which are untouched by heats. Do metal roof coverings bring unique ventilation needs or condensation concerns when installed on residences? The basic answer is "no" yet there is more than a straightforward response.
Criterion asphalt shingles
Steel roofs are the click here best way to see to it that your roofing system looks outstanding, lasts (essentially) forever, and shields your house from whatever the weather condition can throw at it. Beartooth Metal Roof offers the areas within a couple of hundred miles of Payments, Montana.
Some metals rust in specific environments or damage more conveniently than others during hailstorms or installment. Similar to a lot of roofing tasks, the work begins with taking some dimensions as well as ordering the needed products as well as fasteners. Steel roofs can be unpleasant as well as loud in household settings. Nevertheless, if the steel roofing is installed over an existing asphalt roof covering, sound shouldn't be a trouble.
Additionally, the attic and also insulation give a. From interior space, inhabitants hardly ever see any boost in audio levels when a steel roofing system is installed. Although most steel roofing items lug warranties similar to the best asphalt roof shingles( regarding 30 years), in practice, steel roofing systems have actually been recognized to last half a century or even more. According to State Ranch Insurance coverage data, metal roofing systems regularly have a long life of 40 to 70 years. It is therefore extremely rare for a house Additional info owner to mount greater than one steel roof covering over the time she or he resides in the residence.
What underlayment do you use on a metal roof?
The best material for use with metal roof insulation is in the form of foam batting. This foam can be used on either the outside or the inside of the sheathing. You will want to use this over rolled up or spray insulation because of the way that it lays flat and it can be easily installed under the metal roofing.
- In warmer climates below steel roofs, especially metal roofings that have straight contact with the underlayment, high temperature underlayments are commonly asked for.
- Another function that steel roofing system underlayment should have that is not needed for floor tile roof application has a smooth non-granulated surface.
- All points being equal, standing seam steel roofing will certainly cost more than steel roof shingles, although performance-wise they provide practically the exact same benefits as well as durability.
Metal Roof Covering Installation: Exactly How to Install Steel Roof Covering Over Tiles
Then again, huge hail can also damage an asphalt tile roof covering, so if you make certain to have great property owner's insurance policy that covers such storm damages, there is no reason not to install metal roof. It's usually thought that metal roof covering is suitable just for roofing systems with a steep incline, yet standing-seam metal roofing can function fine on gently pitched roofings. This kind of roof is mounted in large sheets with joints that are raised and sealed securely with each other to withstand water. While some slope is necessary to ensure water run-off, the majority of homes can approve metal roof covering.
As well as, as you can see from the photos, if you select a good-looking design from the many options readily available, your house certainly won't look like a livestock barn. To air vent the roofing, openings are cut in the old roof covering above the soffit, which pulls air via the soffit vents below. Considering that it carries out warmth quickly from the sunlight, snow slides off more quickly than with standard roofing. Establish the deepness of a circular saw to the thickness of the http://fernandolstd771.unblog.fr/2020/05/17/owens-corning-tiles-period-how-long-do-they-last/ roof covering outdoor decking plus that of the tiles.
Roofing to Wall Conclusion
Can a ridge vent be installed on an existing roof?
And a pale color will absorb less heat than a dark color. While it's true that a metal roof will absorb heat when directly exposed to the sun, the same is true of any roof covering material. The longer they stay hot, the more heat they'll transfer to the building beneath.
Any kind of underlayment that helps floor tile roof covering is good for metal roof and the other way around. Nevertheless, to be a lot more thorough and specific that are many different types of roof underlayment for steel roof covering sheets as well as these are based on area. Steel roofing is infamously warm in the summer season, cold in the winter, as well as in high winds, otherwise affixed correctly, will scam the roofing. Therefore, an underlayment will certainly provide extra defense to your residence that includes insulation in addition to waterproofing and also wetness elimination.
Metal ridge cap home depot
Deck Shield works like http://lukasquuh767.jigsy.com/entries/general/steel-roofing-as-well-as-home-ventilation a human skin, by allowing the water vapor particles go through, while keeping the water out. In this manner, any wetness from the inside runs and also gets away down, in between the underlayment and also the real roofing product, rather than being entraped inside. Mask certain you start mounting the underlayment functioning your way from all-time low up. On lower incline roofings, we overlap the underlayment by at least a foot. Once the tear-off is full, repair work and replace all rotten timber.
This false impression may originate from people being in barns or industrial stockrooms that have tin roof coverings. Undoubtedly these roof coverings are good conductors of sound, but that is since really thin sheet steel is used and there is no insulation. There is no scarcity of colors available, both pre-manufactured, and customized bought.
How do you reroof a metal roof on a house?
Your metal roof should be inspected at least once or twice per year so you can keep an eye out for any potential issues. On average, metal roofs need to be repainted about every 10 years or so, although the time between painting depends on the paint type and manufacturer. When in doubt, have your roof inspected.
The Home Depot
I recommend sifting through different photos of steel roofing system instances within the top short articles on this site. We're having a bumpy ride discovering an asphalt shingle in the color of red we want, so have now transformed our thoughts onto steel. The Colonial Red shade appears to be very close to our door color, as does the Sequoia Red from Tamko. We have a 1890's home with a combination Mansard design roof and also typical sloped roof covering. We are choosing a combination roof (Malarkey Windsor Shingles on Mansard as well as standing joint on slope) on the replacement.
- Furthermore, steel roofs do not need the routine pricey upkeep that roof covering products often require.
- On the various other hand, light weight aluminum will not rust or wear away the means steel can if the finish is jeopardized.
- R panel as well as 5V Crimp metal roofing systems cost as low as $4-6 per square foot, consisting of all materials and specialist labor.
- Those that are made from light weight aluminum are 15-20% more expensive than steel shingles.
- Here's exactly how to evaluate whether it's time to replace your old roofing-- from determining the seriousness of leakages to identifying when missing out on tiles are a problem-- and also what to try to find when you purchase a brand-new one.
All Structure Materials.
How much is a metal roof for a 1500 sq ft house?
Metal objects can cause major wireless Internet disruption, so if you have a house with a metal roof you may need to take extra steps to ensure that your wireless Internet signal is as strong as it possibly could be. You want to avoid dead signal zones in the house where you are unable to get wireless Internet at all.
Examining to make certain the flashing materials are maintained, sealed well, and in good problem will help protect against troubles prior to they even start. Surface area scratches can result from a variety of things, such as installer error or a small branch striking the roofing system throughout a storm.
Any type of variety of factors in the metals market If you sit on the quote also long before Click here for more offering the permission, might cause the cost to go up. Space for solar panels-- Various mounting track systems or replacement ceramic tile systems are readily available to supply adequate area and a strong base to mount a considerable photovoltaic panel range. It retains less warmth, which is useful to roofers throughout installment. There are 2 types of underlayment product available-- artificial and felt paper, also known as asphalt felt, tar paper, or roof tar paper. When I had AT&T (before metal roofing system was put on) function was always weak inside, as well as good exterior also.
Look for leaves and also branches that might obtain embeded valleys or various other spots with reduced inclines or horizontal aircrafts, as well as eliminate immediately. To guarantee the ongoing efficiency of your steel roof, execute the complying with surface-level maintenance jobs on your roofing system.
Other applications can make use of 1Â 1/4- inch galvanized Check out here roofing nails to attach the eave trims to the most affordable roof covering purlins. Validate the eave sealant remains in the appropriate setting in addition to the eave trim, which eave fasteners permeate the facility of the eave sealer right into the eave plate. Install additional rows of wood stripping throughout the roof covering at two-foot spacing from the formerly set up row. Cut any items, as required, to fit an end at nailers for a valley or roof covering infiltration. Set up a row of stripping lengthwise at the height of the roof covering with the upper edge aligned at the peak.
Exactly how to Select the Right Metal Roof Covering Shade: Consumer Guide 2020
The metal roof covering will sweat underneath as a result of condensation as well as if left on bare OSB it will certainly trigger the OSB to turn to mush. Nonetheless, I would certainly invest the money for 1/2" plywood. It's well worth the cost distinction of OSB as any kind of nail opening leak in metal roof covering will spoil the underlying OSB. Most steel suppliers/manufacturers have setup instructions that should be complied with for the roof covering service warranty to be in effect. I understand that the supplier of mine desired 1/2" plywood and 15pound roofing felt minimum. Check with your metal producer. I have a steel roof covering and inside your home the phone reception is not as good as outdoors.
Mount additional rows of wood stripping across the roofing at two-foot spacing from the previously installed row. Cut any kind of items, as needed, to fit an end at nailers for a valley or roof infiltration. Mount a row of removing from end to end at the optimal of the roof with the top edge straightened at the optimal. Use the lower side of the roof covering as an overview and install nailers end to finish throughout the roofing, with the reduced edge two inches from the edge of the roof. Drive a pair of 8d nails through the timber stripping at each recommendation line for a rafter.
The underlayment is a safety layer that not only shields moisture that drops from the sky, but also dampness that originates from the sky. The distinction we're discussing is the difference between rain as well as dew (or frost).
I would certainly get in touch with the producer, in addition to check what the ideal spacing of batter in case of 2x4 should be for your system. My construct team utilized OSB, Environment-friendly Guard Roof Covering Underlayment, after that the metal roof. There are no assurances in regards to roof, but I would certainly state worrying about the washers failing would be like worrying that the sunlight won't ever radiate once again. Typically, condensation is managed by protecting the steel roof covering to make sure that the panel temperature never reaches the humidity.
Exactly how do you attain excellent attic room air flow?
Exists any type of firm you are able to refer me to in my area? See to it the incline of the valley is in line with what the roofing system is designed for. I would certainly say a minimal slope of 3 Visit the website to 12 for standing joint. Steel Roof shingles would certainly be 3 to 12 or 4 to 12 pitch depending upon the systems. They require to be removed, plus the deck needs to be examined before a steel roof covering is put on.
Nor do all metal roofs http://frazigqq6j.nation2.com/ideal-bug-and-also-tar-cleaner shout "steel." There are now shingle-style steel roof products that are nearly tantamount from conventional asphalt shingle roofings. Below are 12 things to know if you are wondering concerning the values of steel roofing. You've already figured out that you are mosting likely to set up metal roof as opposed to simply installing new shingles, so you need to remove the old roof. You will intend to do this on a completely dry as well as bright day in order to lessen the possibility of any water or moisture damage to your house. Steel roofs are the perfect method to ensure that your roof covering looks outstanding, lasts (essentially) for life, as well as safeguards your residence from whatever the weather can toss at it.
- If on the various other hand, you have much more exhaust air vent than consumption air vent, you can begin to bring air and weather condition in through the exhaust vents on the roofing system-- not a good idea.
- Some years ago we had a veranda roofing system on the north side of our house we roofed with a nice GREEN steel roof covering.
- A roofing with pitch much less than 3/12 should not be covered with asphalt tiles.
- You have the choice to approve or deny these cookies in numerous classifications.
- The lightning always strikes the tallest things/ optimal, regardless of the material.
What colors do metal roofs come in?
Typically, low slope metal roof systems vary in weight from 40 to 135 pounds per 100 square feet, making them among the lightest roofing products and the easiest to install. Unlike non-metal systems which require an underlying substrate or deck, low slope metal roofs can be applied directly over bar joists or purlins.
It's a 3/12 pitch, high quality roof shingles could have lasted 15 years on that particular low pitch - a whole brand-new roofing system would have been be needed, not just screws. The huge reason I desire roof shingles over steel is I can do it myself.
Serious Hail Storm Can Destroy Metal Roof
Also if you have a Menards in the location they have a snaplock roofing which is an easy Do It Yourself job with only a minor premium on conventional r panels with covert bolts as well as clips. Hip roof coverings can go a little sluggish (the hip part) however still very easy. Regrettably installers charge a costs to mount since it's Go here a costs product not since it takes much longer. DIY and also you will conserve big now and every 15 years in the future conserve even more.
Do you need ice and water shield under metal roofing?
Traditionally, condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. This is often accomplished using vinyl-backed fiberglass insulation to prevent humid air from coming into contact with the cooler metal roof (which may be at or below the dew point).
Price to Shingle a Roofing System Calculator
For roofing systems shingled with laminated shingles, multi-cutout shingles, and also other patterned roof shingles, you'll need to buy hip-and-ridge tiles that are made as buddies to the certain roof shingles product you are using. Simply measure the length of the ridges as well as hips as well as divide by 35 to determine the amount of packages of routine or hip-and-ridge roof shingles you'll require.
Roofing as well as renovating price quotes facilitated.
What is a square in metal roofing?
Roofing Quote Footage is Not the Same as Home Square Footage The roof square footage is what we (roofing contractor) need to calculate a budget quote to do the job. All these things could add much square footage to that 1,500 sq. ft. number.
Roofings can be found in a wide variety of materials and colors, yet what is the cheapest roof to mount? Choosing a brand-new roof covering for a house is a challenging experience since there are a lot of readily available materials. The majority of people choose some sort of asphalt roof shingles, as they are the least expensive to date.
Another choice is to measure your home's top floor's square footage or, much more correctly, the attic floor location. If you utilize this technique, you'll require to consider the incline of the roofing system.
Mounting a Roofing with Larry Haun.
It's ideal to Click here! prepare your order using Click here to find out more the same waste element that you would make use of for three-tab shingles-- at worst you'll simply have a number of packages to return.For a simple roof, I generally figure 1 percent as a waste element. On a complicated roof with open valleys, I add 5 percent as well as occasionally more.
- Add the square video of all of the roof airplanes together.
- If this isn't managed prior to a brand-new roofing system is installed, it can demand frequent repair work, trigger early failure or nullify the shingle maker's warranty.
- After that it may be positioned as a per square quote, if the roof damages is spread over a larger area.
- Shayne November 30, 2018 at I have a 1953 blog post and also light beam house with 2-inch tongue and groove vaulted ceiling.
You will certainly require to measure the size as well as elevation of you roofing system to determine the amount of packages you need to purchase. If you have valleys as well as or dormers, you will require to measure and calculate those by adding their sq . Ice as well as water shield can be found in rolls with sticky on the back. I typically only run it under the valley area and also at the end of the roof covering where ice dams can form to stop the water from permeating under the shingles and also paper.
Why is roofing so expensive?
While metal roofing is primarily measured by the square, which is one hundred square feet, we are routinely asked for metal roof prices by the square foot.
From there, you can estimate the complete weight of the particles. Ultimately, you can then choose the ideal dumpster to accommodate the cleaning. As formerly discussed, the weight of shingles does vary by type as well as by maker.
Valleys are either woven or reduced; both methods call for concerning the same variety of tiles. On a woven valley, each training course of tiles is extended past the valley crease and a minimum of 12 in.
The number of square feet are in a 10x10 space?
For the atmosphere, standard roof covering is filling up acres of garbage dump annually; metal is 100% recyclable, and also for that reason environmentally friendly. Steel roofings are about a third of the weight https://charliepiny807.page.tl/Shingles-vs-.--Shakes_-What-is-the-distinction-%26mdash%3B__-Maxx-Roof-Covering-and-also-Building-LLC.htm of typical roof coverings.
What To Do When You Can't Pay For A Roof Repair
An additional thing to take into consideration is finding a professional within my budget. Since manufacturer certifications are beneficial organisation properties, lots of service providers will certainly list their qualifications on their websites. For a checklist of GAF manufacturing facility certified service providers in your area, go to the GAF Service provider Locator. Always check, Have a peek at this website the customer review before buying their services https://charliepiny807.page.tl/Roofer-Salem-Oregon-.-.htm it's so important.
Roofing.
They exhibit high criteria of professionalism and reliability as well as pay keen focus to detail. Our company believe in the job being done right in the first effort. We will enhance the value of your building by getting you the best roof remedies for you. We utilize the best materials in the marketplace sourced from trusted distributors. Sometimes, contemporary issues call for modern solutions.
I 'd want to get an expert to do it if we do replace our roof. Watch out for a specialist that stress you to authorize an agreement before the insurance company has estimated the damages. Some service providers claim they can deal with whatever your insurance provider settles upon, nonetheless the homeowner requires to guarantee it's not simply any type of quantity, yet the right amount. The contractor must thoroughly examine the house as well as check that their insurance insurer didn't miss out on any kind of damages.
Avoid contractors that request the entire project cost, or large cash down payment, up front. Among the most fundamental parts of your search is vetting different roof specialists as well as contrasting their job.
# 1 Selection in Salem for Low Incline Roof Coverings.
- My old roofing was dated and the siding was broken.
- That being claimed, I have actually been looking for a roofing contractor, however I haven't discovered the right one yet.
- A roofing contractor is an individual, firm, firm, or partnership that carries out roofing job controlled by code as well as for which a license is needed.
- Utilizing Learn more a credit card boosts the possibility that, in a worst-case scenario, you'll have the ability to recuperate your cash without pricey lawsuits.
- I actually like the suggestions about obtaining a considerable guarantee.
Founded in 1886, GAF has grown to become North America's biggest supplier of property roof covering and also commercial roofing. Professional installers have long favored the tough, trustworthy performance that just a GAF roof covering can supply, and have actually made it the # 1-selling brand name in North America. I such as the guidance about getting a solution guarantee. I would intend to make certain that if something does occur, I am covered.
After that we will recommend customized roofing solutions based upon your demands as well as scenario. Our roofing professionals have actually been a key cog in establishing the good online reputation we have.
Comprehending Your Roof Covering Replacement Options.
The Better Business Bureau (or BBB) is one of the best internet sites to examine a professional's reputation. You reach check out many information concerning a possible company.
We focus on creating cutting-edge roofing systems for each challenge. Best Roof Company Is What You Are Looking For if You Are Looking For a New Roof System. We Supply Finest Deals, At Lucrative Fees To Our consumers. When applied to a CreativeWork (e.g. NewsArticle) the concepts are those of the event primarily responsible for the creation of the CreativeWork.
" I'll track as well as repair those leakages and also in a snap, you'll be able to resume your service operations. But first, you require to pay me 50% of the total price," the supposed roofer states. Relying on words of the guy, Miss Wesson made the ahead of time settlement-- in cash.
Garland Roof Covering: Using Self-Adhering Modified Bitumen System
Do not forget to double check the baton garage on your roof; you'll require to factor a 10mm drape between each baton right into your calculations. High-performance products such as Cromar Vent 3 High Performance Felt and Redland Spritech 400 2S are suitable for across the country applications. These strong, wind limited membrane layers can be made use of with nearly all baton determines and also will certainly secure the roofing in even the most severe climate condition. Breathable roof covering felts have to be resilient, breathable, strong, flexible, and also water-proof. Nobody product can strike every one of these points flawlessly, so makers target their products to specific toughness.
Breathable Roof Membrane Prices
Damage of the flat roofing system could be reduced by proper maintenance. A built-up membrane level roof, on the other hand, can last as much as 30 years.
Each of the 3 more recent types of membrane roofing systems consist of materials that resist development and contraction, in addition to mirror much of the UV rays. Likewise, since these membranes either lack seams or have strong seams, what expansion and contraction does occur does not create leaks as well as breaks at these joints. These newer roofing systems are likewise attached directly to the top of a structure, which eliminates the requirement for excess weight above.
Still, states in the northern parts of United States do have their reasonable share of residences with level roofings, and its flawlessly great to set up a level roofing system in a state like Massachusetts or Vermont. You just need to be ready for more regular maintenance checks and potential fixings.
There are likewise no plasticizers in the insulation which just adds to its environmentally-friendly allure. Modified bitumen roof was improved by including substances like APPLICATION (atactic polypropylene), as a means to ensure the brand-new systems could resist UV light, oxidation, breaking, and also blistering. The granulated surface of changed asphalt was also contributed to supply extra UV resistance, yet only this surface area just makes it harder to identify leaks as well as splits.
- There are additionally no plasticizers in the insulation which only adds to its environmentally-friendly allure.
- The roofing systems are applied by warm wiping asphalt, lantern used, or applied with cool adhesives.
- Research study and examination plays a vital function when choosing whether you want to explore overall roofing system replacement, in addition to the very best flat roof covering materials for your scenario.
- Bitumen Learn more roofing systems are developed when modifiers https://www.storeboard.com/blogs/general/tiles-vs-shakes-what-is-the-difference-mdash-maxx-roof-covering-as-well-as-building-and-construction-llc/2336981 are contributed to the common roof covering asphalt, changing plasticizers removed during the purification procedure.
- This option served as an upgrade to standard asphalt roofing and used improved long life and adaptability.
How do you install modified bitumen roofing?
Modified bitumen roofing is a long-lasting material with an average life span of 20 years. But since it's a low-maintenance roofing system, it can last even longer with just basic care and maintenance.
Membrane roof coverings are most commonly used in business application, though they are coming to be progressively common in domestic application. Roofing systems are framed with rafters or trusses, which are rafters signed up with by internal braces so they set up as a solitary element. They need to be covered with some kind of sheathing or outdoor decking prior to most completing roof covering materials can be applied. The most common products for this are oriented hair board (OSB) or plywood, both developed of layers of wood adhered into a panel.
reasons why SBS modified bituminous roof membrane layers make all the distinction
What is the best material for a flat roof?
The APP membrane, short for Atactic Polypropylene Membrane, is a special waterproofing material that is manufactured from Bitumen. They comes in rolls. It is a common waterproofing material used on concrete flat roofs (which are still roofs) or roofs with low pitch.
Tar and also crushed rock can create a strong smell during application which can be dangerous to one's health and wellness. When it comes to torch-on, there's a tolerable odor that would not trigger home owners to leave your home throughout the installation Go to the website procedure.
SBS Modified Bitumen Roofs
High-Performing Commercial Roof Product Types
Also, spend the extra money to buy acrylic additive (a white, milky fluid) to mix in with the cement item. Its so pricey due to the fact that rolled roofing is really heavy, numerous dumpsters require to be gotten, as well as it can only be gotten rid of utilizing unique devices. When replacing a low or level slope roofing system, building code in most states restrictions you to no more than two layers of material.
Say goodbye to 1F Slater's Felts, breathable roofing system membrane layers are the gold standard for brand-new builds as well as re-roofing jobs. In fact, this durable, waterproof membrane offers a variety of advantages over standard roof covering felts. Changing your industrial roof isn't like buying a new mix of coffee for the workplace-- you do not choose this huge on an impulse. If you're looking to change the roof covering on your organisation or one of the buildings you handle, you do your study and also you locate the very best flat roof covering products for your demands and also your spending plan.
SIGHT OUR TASKS INRoofing Portfolio
On the various other hand, if you have actually Customized Bitumen (Mod. Little bit.) or gravel and tar, with rubber ahead, you need to get rid of the rubber roof. Eliminating EPDM or an additional solitary ply membrane is reasonably inexpensive as well as easy. You must likewise ask your roofer which material he would advise. A seasoned contractor will have mounted numerous solitary ply membranes from various brand names, and also will recognize which one has had the least troubles.
- Replacing your business roofing isn't like buying a new mix of coffee for the office-- you don't choose this big on an impulse.
- Do not neglect to double check the baton garage on your roof covering; you'll need to factor a 10mm drape in between each baton into your calculations.
- Ply sheets are frequently produced in a common width of about 36 inches.
- Bitumen roofs cost approximately $1.50 to $3.00 per square foot installed.
- You wouldn't have to worry regarding leakages since the product is proven to be watertight if you're living in a location susceptible to tornados.
- This product has the ability to keep its form after being stretched and also therefore, is widely utilized in modified bitumen roof, finishings, sealants and also paving amongst various other applications.
Layer sheets are generally generated in a conventional width of concerning 36 inches. Initially asphalt roofing called http://juliusttxq060.jigsy.com/entries/general/just-how-to-mount-roof-roofing-shingles for a layer of crushed rock above it for 2 factors.
While a torch-on roof is proven to Visit this website be water-proof, the installation procedure still plays a massive role. Hence, job just with a roof business that has a good record in the industry. Ensure that the employees are equipped with the best abilities as well as devices so that you would not be sorry in the end. If you're trying to find a roof that has great waterproofing abilities, you can rely on torch-on roof covering.
How Much Does an Asphalt Roof Covering Price?
There are also no plasticizers in the insulation which just contributes to its environmentally-friendly appeal. Customized bitumen roof was boosted by including compounds like APP (atactic polypropylene), Look at more info as a way to guarantee the new systems can resist UV light, oxidation, breaking, and blistering. The granulated surface of customized bitumen was additionally contributed to offer added UV resistance, but just this surface just makes it harder to determine leaks as well as splits.
What is modified bitumen roofing system?
TPO compounds have changed in recent years, so it is impossible to say how long current roofs will last, but a general estimate puts a TPO roof between 10 and 20 years. This is due in part to the fact that the top layer of the material is laminated.
First, asphalt with straight exposure to sunlight weakens much quicker, generally as a result of the development and also tightening throughout a day, and additionally the damage produced by UV rays. Secondly, asphalt requires weight above to hold it down, because it rests on the top of a structure, instead of being affixed to it.