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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Lean-to roof - Tiles bedded on mortar on felt on wall
A relative has lean-to roof.
Concrete marley etermit tiles on batons, felt, T&G close-boarded, rafters. 22-degrees. Close-boards stop at the double-brick wall, tiles are then bedded on felt, on mortar, with mortar edging. Over the double-brick wall at a north-facing corner for about the bottom 15" the mortar is falling out and the felt is disintegrating. Interesting population of woodlice. The result is a damp stained plaster-skim over browning for about 6-inch below and a plywood cupboard has delaminated rather spectacularly over about 3-inches. It is a kitchen below so damp loves company on a north facing wall re dew point. Ventilation is now 220+270m3/hr, open gas appliance removed. Q - How can I effect a reliable roof repair? Is it a case of wedge & lift tiles, put impermeable membrane over the wall on mortar, bed the tiles back on mortar. What is the best membrane to use - felt rolls are too heavy for me to handle. At some point the roof needs redoing with more appropriate low-angle interlocking tiles, I'm unsure if the ceiling fixed to rafters makes that more difficult, but in any case putting the job off a while would be useful since it will be me that has to subsidise. The other side appears ok, at least relatively speaking. |
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Lean-to roof - Tiles bedded on mortar on felt on wall
In article
, js.b1 wrote: A relative has lean-to roof. Concrete marley etermit tiles on batons, felt, T&G close-boarded, rafters. 22-degrees. Close-boards stop at the double-brick wall, tiles are then bedded on felt, on mortar, with mortar edging. Over the double-brick wall at a north-facing corner for about the bottom 15" the mortar is falling out and the felt is disintegrating. Interesting population of woodlice. The result is a damp stained plaster-skim over browning for about 6-inch below and a plywood cupboard has delaminated rather spectacularly over about 3-inches. It is a kitchen below so damp loves company on a north facing wall re dew point. Ventilation is now 220+270m3/hr, open gas appliance removed. Q - How can I effect a reliable roof repair? Mortar edging on its own is a bodge. Replace it with lead flashing. -- *If at first you don't succeed, then skydiving definitely isn't for you * Dave Plowman London SW To e-mail, change noise into sound. |
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