Hi!
The rafters in our loft have been sistered on one side before us and the previous owners. Much to many a dismay we didn’t have a structural survey when we bought the house, just the valuation survey required by the mortgage company. We bought this house very quickly.
We’ve not got any or had an issues - our loft is dry, no evidence of dry rot, no signs of warping, no signs of sagging both in the loft and also on the roof so we’re reasonably confident our roof and loft are fine. We’re just unsure why one of the side roof would’ve been sistered? Is it a sign something is wrong? Or was wrong? Would sistering have made this strong enough to do its job? Has the sistering been done properly? We note the sisters don’t extend all the way to the apex - is this correct? Anything we can add to support it?
We’re just planning to board out, as we’ve already started to do, for general storage purposes (nothing particularly heavy). We’ve got a chartered surveyor lined up ready to survey the roof and loft should we think it’s a good idea. We just don’t know if we’re worrying over nothing and if you regularly inspect your loft and roof that you’ll notice if and when something is wrong?
We have recently had a new water cylinder installed in the loft (associated with our heat pump) but the installers built a wooden platform spanning several joists to spread the weight.
What does everyone think?