Shingles may not properly adhere to wet surfaces.
Howslippery are wet roofs.
In addition wood shingles are often slippery and dangerous to walk on and absolutely slippery when wet.
Asphalt shingles are not slippery when wet because the rock granules embedded in the surface provide good traction.
A wet installation can also cause a new roof to fail.
How slippery is the roof when it s wet.
But the granules gradually come loose as the roof ages and loose granules can make even a dry roof difficult to walk on without sliding.
By way of comparison the industry literally had decades of experience with modified bitumen.
If the sheathing or wood is wet during the time of installation it can trap moisture inside of your roof leading to mold rot or other severe problems.
It seems to have some roughness but also looks like it could be a greased up chicken straight outta momma s oven.
Slippery when wet the roofing industry initially was reluctant to adopt the new synthetics.
As a result residential roofing contractors were eager to adopt the premium self adhering underlayment and these were readily accepted by the industry as a.
Advice for walking on or inspecting wet icy steep snow covered roofs wet icy or snow covered roofs are unsafe to walk on in most circumstances possibly excepting expert inspection of flat roofs with safe parapets or railings installed.