In slate roofing, water migration is controlled primarily by the angle of the roof's slope. The steeper the slope, the less water migration there will be. Underlayments: Underlayments are installed on the roof deck, prior to the installation of the slate roofing shingles.
What do you put under a slate roof?
The most common use of mortar under slates is called torching. This consists of a thin line of mortar trowelled across the top edge of each coarse of slate. The purpose of this mortar is intended to stop the very small amount of wind-driven precipitation, common with slate roofs.
Is roof underlayment necessary?
Whether or not underlayment is required, it's always a good idea because it provides the roof deck an extra layer of defense against damage. ... Without underlayment, this rain will soak into the roof deck and cause problems ranging from mold and rot to leaks within the home's interior.Jan 24, 2020
Can my roof support slate?
Because Slate is natural and not mass produced, they can vary in thickness, but often that adds to the beauty of a slate roof. ... Slate roofs are heavy, so you'll need to make sure an experienced and reliable slate roofing contractor installs your slate to make sure your roof is strong enough to support the weight.Jan 9, 2019
How do you nail slate?
https://www.youtube.com/watch?v=_LweBf4vwE8
What nails do you use for slate?
Copper nails are most commonly used to fix slates on pitched roofs, but can also be used to secure roofing tiles in place. Copper is also used to create slate straps, which are used on slate roofs to hold broken slates in place, either as a temporary fix or a more long term solution.
How do you attach slates?
https://www.youtube.com/watch?v=VNmB5y4gmq4
Can you nail into slate?
For wind-uplift protection, nails should be installed as low as possible, but not so low as to penetrate the heads of the slates in the course below. Ideally, the nail holes would be located on the thinner end of the slate shingle to prevent the overlying slate from being lifted in the ensuing courses.Nov 1, 2017
How do you stick slates?
The best way to stick a roof slate in place is to use a tried and tested, solvent free and safe adhesive/sealant that sticks and seals at the same time in a permanent capacity.May 23, 2019
How much do you overlap slates?
Slates should overlap by at least three inches on the sides, called sidelap. Even more important is the overlap at the top of each slate, called headlap. If your roof is steep — with a pitch of at least eight inches in height for every 12 inches in width — you need three inches of headlap.Feb 19, 2019
How do you work out batten spacing for slates?
Measure between the top of the top batten and the top of the lower batten and this divide this measurement by the manufacture's 'gauge' - this will give the number of slates/tiles rows need to cover the roof. This number is very unlikely to be a whole number, so round the number up to the next whole number.
What is roof side lap?
The side lap also is referred to as a side joint, vertical joint, keyway, bond line or rain course. As defined in the glossary of the NSA manual, it's “the longitudinal joint between two slate shingles”. ... Similarly, if the roof has 10-inch-wide slate, the side laps should be 5 inches.Jan 27, 2014