ArmorLay 25 Synthetic Roof Underlayment 4' x 250'

Synthetic Roof Underlayment is the only way to put on underlayment, I'm old enough to have used tar paper for years and you could never get it wet and it would stay flat. There is no going back to tar paper.

We recently installed ArmorLay 25 Synthetic Roof Underlayment on our new roof, and we're extremely satisfied with its performance. The underlayment is strong, durable, and highly resistant to moisture. When a severe storm hit our area shortly after installation, The ArmorLay 25 kept the water out, preventing any leaks or damage to our home. We highly recommend this product to anyone looking for a reliable and effective roof underlayment.

Easy to lay down with staples or capped nails; waterproof once down and overlapped properly, super lightweight, great coverage per roll, and easy to cut.

Great product.

This does not have an adhesive backing like some roof underlayment products have, but it is SO much easier to apply, and you get far more ( both width and length) for your dollar. May not hold up if left exposed for months, but as an underlayment product for metal and asphalt roofing I’d have no concerns. Good product.

Used for shed roof

Performed well and easy installation.

I used it on a 14x24 storage shed which is uninsulated and no AC power. I gave it 5 stars for what it is and for it's price point. I wouldn't use it on a dream home build. I'd use titanium UDL for that which I've used on my 38x34 garage. But for what it is it's great for smaller jobs. I was worried about walking on it on a 4:12 roof and being held by staples. I prefer synthetic underlayment over tar paper.