fixing wall plate

Rawl bolts about every foot if its carrying a lot of weight?

terms of studs epoxied or mortared into the wall, and the whole thing bolted up tight. With maybe even an epoxy bed...behind it..

It all depends on the wall. Rawlbolts are superb into straight concrete into which and accurate hole can be drilled..or even brick,but stone? Hmm.

joints in crucial places

but thanks anyway (c;

Is it safe to drill into it? What is the stone? Can you supply some background infornation, e.g. what the (new?) joists are for?

Rawlbolts, one every three feet is more than adequate...you should use about

Tony

yes

the REALLY hard stuff (c;

just to put a floor in the loft for storage, I'll be using 4 x 2 joists with weiroc (sp) floor boards

the roof timbers are only 3 x 2 so I thought it best to run new joist perpendicular to, and slightly raised above, the current roof/ceiling timbers

thanks

What, though? Granite? Oolite? Chalk? Slate? Marble? Flint? Hertfordshire pudding-stone?

no idea... I'm not an 'ologist (c; it's Welsh stone, possibly waste from the mines tis done now, only had to drill through one rock, the rest fell just right for the bricks

Sorted, then. It could be slate, or limestone, at a guess. Well Done getting it fixed.

P.S. Please sort out your quoting now (no offence intended).

Yep, I did exactly that for a joist a couple of years ago - it was fantastically solid, and they'll never get it down without the wall coming too.

Slightly messy part was lifting the timber onto the studs (which were all slightly skewy depending on how they'd set - next time I'll tap 'em straight with a hammer first) whilst trying not to touch the wet resin which was buttered onto the back of the joist.

Why was there resin on the joist? Contributes very little.