I am in the process of buying a house and will be looking at converting the attic to a storage/playroom but think I will have to re-enforce the ceiling joist to handle the weight. I understand that this can be done by sistering the joists but was wondering if I could simply increase the depth of the joists? For example, if the joists are 2x5 could I not glue and bolt a 2x3 length of timber on top of it effectively transforming it into a 2x8.
Any advice you can provide will be greatly appreciated.
Not in any way that would be economical. You would end up having to run metal plates down either side of each joist & it would not be worth it. You should also make sure you get graded timber for this sort of work.
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