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1. Waterproofing
your home...
2. How to choose a contractor
3. Roofing failing warning signs
we can add to this and write up some tips...
1
. What is roofing underlayment?
2 . How do I know which underlayment to use?
3 . What types of roof coverings can benefit from
underlayments?
4 . How long can underlayments be exposed?
5 . Are underlayments vapor barriers?
6 . What is the difference between one product and
another?
7 . Can I put AC HomeSeal on my whole roof?
8 . How do I know if I've got an ice dam?
9 . Do all NEI products meet building codes?
10. Which product should I use for waterproofing
(e.g. windows and doors)
11. Where can I find NEI products?
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1
. What is roofing underlayment?
A roofing underlayment is a rubberized membrane that goes under shingles to
prevent water penetration. It is the one piece of a roofing system that is
expressly designed to be waterproof. Without an underlayment, water from wind-driven
rain or ice dams can infiltrate under your shingles and severely damage your
roof—or even worse, the inside of your home. Roofing underlayments,
widely regarded as the best in the industry, offer premium waterproofing protection.
2.
How do I know which NEI underlayment to use?
First, consider your climate and the kind of protection your home requires.
3.
What types of roof coverings can benefit from NEI underlayments?
You can use NEI underlayments for all commonly used roofing materials including
asphalt shingles, slate, tile and metal. For metal roofs, first check with
the manufacturer for any special requirements.
4.
How long can NEI underlayments be exposed?
NEI underlayments are not meant to be left permanently exposed to the sun.
In general, the membrane should be covered with the final roof covering as
soon as possible.
5.
Are NEI underlayments vapor barriers?
Yes. Vapor barriers help maintain proper ventilation, which is important for
all types of roofs. Ventilation is especially critical for certain kinds of
metal roofs, such as those made from zinc, which are particularly susceptible
to corrosion.
6.
What is the difference between one product and another?
See the products section
7.
Can I put AC HomeSeal on my whole roof?
Yes. It can be safely applied to the entire roof.
8.
How
do I know if I've got an ice dam?
Ice dams form when warmth from inside the home melts the bottom layer of snow
on the roof, sending water trickling down to the edge. Exposed to frigid air,
it immediately refreezes, clogging gutters and causing the water behind it
to pool up and find a path into the home below, usually through the shingles.
Ice dams are more common in older or poorly insulated homes and those with
low-pitch roofs. But even in newer homes, a new roof can leak if water runs
backward in between the shingles.
9.
Do all NEI products meet building codes?
Yes. NEI products meet the key performance standards prescribed by ASTM and
ICBO for fully adhered underlayments in severe climates. (See ICBO Evaluation
Services Report No. 3997). We also have a UL (Underwriters Laboratories) Class
A fire classification for fiberglass shingles, and a Class C for organic felt
shingles...
10.
Which product should I use for waterproofing other areas?
See the products section
11.
Where can I find NEI products?
Just
ask your professional contractor or click here.
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