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The best thing that should be under a roofing slate is all natural, hard, solid wood. when a slate roof is installed properly NO UNDERLAYMENT IS NECESSARY. however roofing felt is often used to waterproof the building during installation but is not a necessary component of a slate roof. there is not an underlayment in existence that will last even half the life of a properly installed natural slate roof. underlayments are not just a waste of money, many of them can actually decrease the strength and longevity of your slate roof. most roofers install underlayments under their slate roofs as a "back up plan" because they don't trust their workmanship. sticking to using only time tested materials and techniques is the best way to install anything and avoid taking unnecessary, unproven risks. 30# roofing felt is the best product to use under slate because it is thick enough to protect the building during installation and it still allows the roof to breathe. also never install a slate roof on a plywood deck. best case scenario would be raw, sawn, hard lumber at least 1" thick with at least 1" horizontal gaps between boards. i prefer a fresh or "green" oak or hickory installed "green" so it is still soft enough to accept slate nails but will soon after harden and give the best hold on the nail shanks. I've re-sheeted too many roofs to be ignorant enough to think plywood will hold nails securely for at least a hundred years. also in most places you can go directly to a saw mill and get ruff sawn lumber for about the same price as plywood. make sure you use good fasteners and hand nail yes the deck too.

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13y ago

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Related Questions

Where can one purchase roof slates?

One can purchase roof slates on various websites like Amazon or eBay. One could also go to a local furniture store and ask if they have any roof slates for sale.


Why do slates fall from a roof?

the nails rust.


What is a Slater?

A Slater is someone who puts slates on a roof.


Who can we prevent roofs from dampness?

If the roof slates or tiles are in good repair, with no slipped or missing slates or tiles, there should not be any dampness. If there is, the probable cause of dampness in the roof space (loft) is bad ventilation. Ensure there are air spaces or good ventilation under the eaves, covered by mesh to keep out nesting birds.


How many 500x250 roof slates per sq mt?

To calculate the number of 500mm x 250mm roof slates per square meter, first convert the dimensions to meters: 0.5m x 0.25m = 0.125 square meters per slate. Then, divide 1 square meter by the area of one slate: 1 / 0.125 = 8 slates. Therefore, you can fit 8 slates of this size per square meter.


What nicknames does Christian Slater go by?

Christian Slater goes by Slates.


What goes under shingles on a roof to provide an additional layer of protection and insulation?

Underlayment is placed under shingles on a roof to provide an extra layer of protection and insulation.


Who can we prevent roofs from water?

The sloping roof of a house is covered in an overlapping covering of slates or tiles, forming a waterproof weather protection.


How do you remove roof slates without breaking them?

To remove roof slates without breaking them, start by using a slate ripper or a flat pry bar to gently lift the slate from the bottom edge. Carefully slide the tool under the slate to loosen it from the nails or fasteners without applying excessive force. Work slowly and methodically, ensuring you are not twisting or bending the slate. If the slate is particularly stubborn, check for any hidden fasteners that may need to be removed first.


What goes on the roof of a car?

roof scoop or sun roof


Which rocks are found in garden?

Peat can be found in the garden, it is a bit like soil. Slates on the roof. Granite and marble might be used for your gardens paving stones.


Why causes slates to fall from a roof?

Roof shingles are always visible and an important aspect of a building's in patterns, textures and colours. Roof shingles, like other building materials on different buildings, are typical of a material locally available.