- What is the difference between 15 and 30 roofing felt?
- Can you roof over wet plywood?
- Will roof shingles flatten out?
- Why are my new shingles not laying flat?
- What causes new shingles to buckle?
- How do you fix lifted shingles?
- Should I stay home during roof replacement?
- Can you put new shingles over old shingles?
- Is it OK to put a new roof on in the winter?
- What is the minimum temperature to install shingles?
- What causes granule loss on shingles?
- How cold is too cold to install shingles?
- Is it OK to put a second layer of shingles on a roof?
- Will shingles reseal?
- What happens if it rains during roofing?
- How long are unused roof shingles good for?
- What does a wavy roof indicate?
- Is it normal for a roof to sag?
- Why does my new roof look wavy?
- How warm does it have to be for shingles to seal?
- How can I make my roof look new with shingles?
- How late in the year can you replace a roof?
- How long does it take to strip a roof?
- How long does it take a new shingle to lay flat?
- How long does it take new shingles to seal?
- How do you make asphalt shingles last longer?
- Do you have to remove the plastic strip on shingles?
- Are heavier shingles better?
What is the difference between 15 and 30 roofing felt?
Generally speaking, 30-pound felt is less likely to experience tears than 15-pound felt.
This is beneficial for installation, roof protection, and all of its other functions.
Additionally, if a shingle comes off in a storm, 30-pound felt is much less likely to tear along with the shingle, keeping your roof protected..
Can you roof over wet plywood?
A: It is never a good idea to install a roof over wet plywood or any type of roof sheathing. … Installing shingles over wet decking also will void any warranty you might have from the shingle manufacturer. Most roofs’ rafters are set 2 feet apart and the plywood decking should be a minimum of 7/16 of an inch thick.
Will roof shingles flatten out?
installation. The shingles do not flatten out or conform to the roof deck because they were “distorted” while in the bundle. After installation, an appearance of “bumpiness” or “lifted shingles” may be evident.
Why are my new shingles not laying flat?
Before new shingles seal down, they can look a little lumpy and uneven, but once the roof gets hot enough, they should soften, flatten and form a permanent seal. Sometimes this problem is more apparent on north-facing roof slopes that don’t heat up sufficiently for the shingles to seal until summer.
What causes new shingles to buckle?
Buckling is the result of asphalt shingles not laying flat due to the wrinkling of the roofing underlayment or the movement of the wood deck. During the summer months we normally experience high humidity, and as the old roof is torn off the wood deck is exposed and absorbs moisture.
How do you fix lifted shingles?
Slip a flat pry bar under the damaged shingle and press down to pop out the roofing nails.Slide the new shingle up into place. Be sure to align with the shingles of either side.Carefully lift the upper shingle and secure the new shingle with roofing nails.
Should I stay home during roof replacement?
The simple and short answer is no, there’s no need to. Replacing a roof on an average, single-family home will only require a few days of time. … However, if you work out of your home or if you are spending most of your time at home, you may want to stay away while the work is going on.
Can you put new shingles over old shingles?
You might be able to lay new shingles over existing shingles and avoid the cost of tear-off. … Some roofers install a layer of waterproof shingle underlayment (WSU) over the existing shingles at the eave end, as would be done for a roof laid on bare sheathing. This provides added protection against ice dams.
Is it OK to put a new roof on in the winter?
The short answer is ‘yes’, but to understand that let’s look at the two main reasons why most roofing companies and roofing customers don’t consider winter the best time to install an asphalt shingle roof. … The sealant on shingles installed in cold weather may not activate right away; it may not activate until spring.
What is the minimum temperature to install shingles?
temperatures are at or below 40°F (5°C). Hand sealing all shingles along the rake edges: Each shingles should be hand sealed using 4 spots of asphalt roof cement (complying with the ASTM D4586, Type I or Type II).
What causes granule loss on shingles?
Normal Wear and Aging Old roofs, especially those nearing the end of their lifespan, are more vulnerable to granule loss. Some shingles become so fragile that stepping on them can cause them to easily break into smaller fragments. In such cases, get ready to contact roofing contractors to have new shingles installed.
How cold is too cold to install shingles?
According to Roofing Construction & Estimating By Daniel Benn Atcheson, the best temperatures to install asphalt shingles is between 40 and 85 degrees F (4 and 26 degrees C). If you’re installing roofing shingles in cold weather below these temperatures your shingles may become brittle and more prone to breakage.
Is it OK to put a second layer of shingles on a roof?
There are already two layers of shingles on your roof – Most building codes only allow two layers of any type of roofing on your home. … You need to tear off the roof and install a new one. Current shingles are curling or in bad shape – The new shingle roof should lay flat on your old one.
Will shingles reseal?
Most unsealed shingles should not be expected to reseal, but can be hand sealed with roof cement. … Shingles are considered wind damaged when they are torn, creased, or detached from the roof.
What happens if it rains during roofing?
Rain is bad during a roof installation because the water can damage the roof decking. A new roof should never be installed over a wrinkled barrier or wet wood because this is against building codes. Also, asphalt shingles may not adhere properly to slick surfaces, particularly if there’s high humidity.
How long are unused roof shingles good for?
one yearDo Shingles Have A Shelf Life? Theoretically, there is no shelf life on shingle products in the bundle. than one year. Should a shingle be used after one year’s storage, care should be taken while handling as the shingle may have stiffened over time.
What does a wavy roof indicate?
A layer of felt paper goes down before the shingle does for every installation, which essentially acts as a base. If the material was damp, if the day was humid, or if the paper bubbled up a bit then it can produce a wavy appearance on your new roof.
Is it normal for a roof to sag?
Excessive weight to the existing structure can cause roofs to sag. This includes snow, ice, wind as well as sheathing and roofing materials. Putting too many layers of shingles on your roof can also result in sagging.
Why does my new roof look wavy?
The most common reason why your shingles might be wavy is that your house is new. … Felt paper is placed right before the new layer of shingles is placed in the roof. If ever this paper is exposed to humidity, then it will form bubbles that will eventually cause your shingles to warp.
How warm does it have to be for shingles to seal?
70 degreesShingles won’t seal unless they warm to an ambient temperature near 70 degrees. That doesn’t mean it needs to be 70, because solar radiance will heat the shingles even if temperatures are in the 40s.
How can I make my roof look new with shingles?
Here are five tips to help make your roof look younger and better this spring!Clean Away Debris. Gutters full of needles and shingles covered with leaves don’t impress anyone. … Get Rid of Algae and Mildew. … Install New Gutters. … Repairing Edges and Eaves. … Replace Shingles with Better Colors.
How late in the year can you replace a roof?
The busiest time of the year for most roofing companies is usually late summer through the fall months. Sometimes, it gets so busy that many homeowners will have to wait up to a month, and that’s if they can even find a reliable roofing company to replace their roof or do a roof repair.
How long does it take to strip a roof?
For residential homes, roof replacements will usually take two days. The first day is to remove the existing roof from the building. The second day is to install the roof. Depending on the size of the roof a day or two longer may be necessary.
How long does it take a new shingle to lay flat?
In most cases, time and warmth are the remedy. The shingles need exposure to sunlight and warm temperatures so they can “relax” and lay flat. Depending on temperatures, this process can take from one week to several months.
How long does it take new shingles to seal?
The shingles need exposure to sunlight and warm temperatures so they can “relax” and lay flat. Depending on temperatures, this process can take from one week to several months. Do not lift the shingles and add roofing cement. The shingles will settle on their own.
How do you make asphalt shingles last longer?
5 Ways to Help Your Roof Last LongerAvoid Power-Washing Shingles. Concentrated spray can loosen the granules from the products’ top coating—and resulting damage might not be covered by the warranty. … Check the Ventilation. … Clean Gutters Regularly. … Insulate Attics and Cathedral Ceilings Properly. … Fortify the Roof.
Do you have to remove the plastic strip on shingles?
The film strips on the back of each shingle are to prevent sticking together of the shingles while in the bundle. Their removal is NOT required during application. … This strip prevents the shingles from sticking together in the bundles, and need not be removed for application.
Are heavier shingles better?
A heavier shingle doesn’t necessarily make a better shingle. Many years ago roofing contractors would compare shingles by weight, the heavier the shingle the better. Lighter shingles were always the lower quality shingle that would not last. … Weight is no longer a factor when choosing a shingle.