Waterproofing a sectional garage

My daughter has purchased a house with a sectional garage, I think the make is Compton. Anyway, it gets into the garage three ways.

1) Through the sides of the door. 2) Past some roof nails (these have rubber "top hats" on). 3) The most by water running off the roof at the rear of the garage then into the gap between the corrugated roof and wall. Any suggestions please as how best to deal with this? Many thanks
Reply to
Broadback
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Is it used as a garage, or workshop/store/whatever? I've just dealt with one of these things.

Reply to
Chris Bacon

Broadback expressed precisely :

Probably only when the wind blows the rain. There are supposed to be thin narrow strips along the sides which help prevent this. Check they are fitted or fit some.

The nails may have been partially pulled out by the wind lifting the panels - such that there is a gap rather than the top hats sealing tight. You might try replacing the nails with stainless steel screws so this provides a tighter seal.

That sounds as if there is not enough overlap of the roof at the rear, to throw the water clear? Have you thought to try fitting a gutter to catch the run off?

Often the leakage problems will due to the rain water which falls on the exposed edge of slab, making its way under the garage sections and onto the floor. A triangular dam of mortar all the way around the base along the inside of the wall usually fixes this. It needs to have a gap between wall and mortar, to allow the walls some movement. A bit of thin ply or similar laid vertically against the wall, then removed just before the mortar sets hard works well to provide the esential gap.

Clean and dampen the floor before you start, to get a good bond.

Reply to
Harry Bloomfield

As most, I suspect Chris, a combination of all three.

Reply to
Broadback

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