3 Problems With Synthetic Roof Underlayment

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Synthetic underlayment is far superior to felt underlayment, but there are some minor problems with synthetic roof underlayment that you should be aware of. By the end of this video you'll know if synthetic underlayment is right for your roof.
00:00 Problems with synthetic roof underlayment
00:38 Is synthetic roof underlayment better than felt
00:53 Synthetic roof underlayment price
01:45 Synthetic underlayment weight versus mil thickness
04:27 Building codes for synthetic underlayment
3 Problems With Synthetic Roof Underlayment
1. Cost
2. Mil Thickness Vs Weight
3. Building Codes
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Most roofs use a synthetic roof underlayment because it's a better product, but there are some problems with synthetic underlayment that you should be aware of. If you had a list of pros and cons for synthetic underlayment vs felt it would be lopsided in favor of the synthetic underlayment.
The main problem with synthetic underlayment for roofs is the cost. The price of synthetic underlayment is considerably more expensive than felt underlayment in the short term. However, in the long term using a synthetic underlayment for metal roofs will save you money versus felt.
We recommend Sharkskin roofing underlayment and they make three types of roofing underlayment
Sharkskin Ultra SA
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Опубликовано:

14 авг 2024

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Комментарии : 21

@thulsa5218 10 месяцев назад

Here in blistering AZ synthetic felt is not holding up compared to tar paper.

@Austinroofingcontractors 6 месяцев назад

Finally, someone who really knows and is not afraid to tell it like it is. Synthetic underlayment is not waterproof if you use it.

@kermitefrog64 2 года назад

I have used 30lb. tar paper and it has performed great. In our area synthetics have run 3 times the cost of 30lb. tar paper.

@Austinroofingcontractors 6 месяцев назад

Where do you get the 30 pound organic felt underlayment these days? I would question if it is indeed 30 pound or is it number 30? There is a big difference!

@skytrip5273 5 месяцев назад

That's what I'm thinking of using. Synthetic being made of plastic seems like it would break down in time with heat.

@CrustyAbsconder 2 года назад

Wouldn't it be best in the long run if the metal panel had a coating on its underside ?

@VANESSASVANLIFEJOURNEY Год назад

Thanks for explaining this very helpful

@johnnyweld9672 6 месяцев назад

all white metal roof is the best for Florida for sure Thank you

@mannyg35 Год назад

As a home owner in central valley California where do you purchase 10 rolls of sharkskin ultra and ultra SA?

@dagnabit29 2 года назад

Using a machine caliper for checking thicknesses is absurd and the roof is supposed to keep your roof dry not your underlayment secondly lack of permeability on these Is hard on the decking there been numerous problems with synthetic underlayment nails weeping and degradation of roof decking especially if every roof bay is not vented I would use 30 lb certified roofing felt certified d226 type 2 you can also double up on it depending on your location I find they like to use this product one easy to walk on secondly if the do horse crap job of installing your roof they have the underlayment to fall back on eventually it will become a problem a delayed time before you recognize the leak decking damage not to be very truthful not sure how this may apply to metal roofing but again the certified organic felt paper will not cook your decking and or hide leaks if they occur providing knowledge of that leak far sooner hence allowing early intervention to limit damage

@Mickey_Bauer 2 года назад

What's a good underlayment for the hot and dry Arizona concrete tile roof 4:12 pitch that requires a double layer and no ice & water shield, 115 wind? All the contractors here are recommending G-40 or TU-43 SBS modified underlayment for tile roofs. Some of them say synthetics are great for the colder climate shingle roof but they would never install it on a tile roof in AZ.

@WesternStatesMetalRoofing 2 года назад

Mickey, my company specializes in metal roofing so I don't have the expertise to give you the correct advice.

@JuanElBautista89 2 года назад

G40, TU 43 or Malarkey 40# are great options.

@Mickey_Bauer 2 года назад

@@JuanElBautista89 thanks for your reply. I already purchased TU35 as that was the only option i could find in my area after two months of hunting for supplies (big supply shortage). We'll go with a double layer of TU35 plus regular wood battens because i couldn't find the elevated ones.

@JuanElBautista89 2 года назад

@@Mickey_Bauer That will do the job 👍🏽

@everythingmatters6308 Год назад

What is the reason a building code would not allow synthetic underlayment?

@Kiddro22 Год назад

Cuts the lifespan of the roof is what I was told

@billbillards569 11 месяцев назад

30# felt is the best

@jeffthielke8091 11 месяцев назад

I’m in Los Angeles and my contractor is about to install 30# felt. Should I ask for synthetic?

@billbillards569 11 месяцев назад

No. 30# is thick, heavy and time tested. It will last as long as the shingles. @@jeffthielke8091

@thulsa5218 11 месяцев назад

@@jeffthielke8091 Alot of roofers here in Phoenix, AZ are switching back to 30lb felt. They say it is helping the roof decking last longer as it "breathes" better.