Attaching Raised decking to house.

[Simpso]

HI everyone, i am currently planning some raised decking which will attach to the backside of my house.
I was thinking about using expanding bolts to attach the back frame to the building, with washers in between to stop contact between brick and wood.
What i want to know is if this is the usual way of doing this and if so how deep should i look to drill into the brickwork and how long should my bolts be?

If you require any other info to help me out just let me know

Thanks

 

[Crystalclear]

Hello there.

Regrading the depth of the hole, I'd say go deep as the brick itself, and when you say you are gonna be using washers to leave a small gap, is that because your worried about it rotting?

For faster fixing and less worry I'd recommend popping down to Screwfix and picking up some masonry bolts; the teeth on these cut into the brick and grip like an alligator.

Use a ratchet or an impact drill/socket and speed drill them in.

 

[Simpso]

Hello there.

Regrading the depth of the hole, I'd say go deep as the brick itself, and when you say you are gonna be using washers to leave a small gap, is that because your worried about it rotting?

For faster fixing and less worry I'd recommend popping down to Screwfix and picking up some masonry bolts; the teeth on these cut into the brick and grip like an alligator.

Use a ratchet or an impact drill/socket and speed drill them in.

Never even thought about masonry bolts.

I read that its a bad idea to have the wood connect with break due to possible damp issues. THe whole thing will be below the damp course though.

 

[Crystalclear]

I couldn't stop rating this fixings, they're a life saver, in time and money. I buy mine at 60p for 120mm in length, a box of them I should say.

If you have concerns for water penetration, then I'd suggest a long strip of Flashband, running along the back of the timber, and a quality external silicone along the top of the timber to stop water runningdown the back of the wood.

http://www.screwfix.com/p/flashband...g - Building&gclid=CJOEgOyb6sYCFcPMtAodJvsDSQ

 

[Simpso]

Do you think these ones will do.
http://www.screwfix.com/p/multi-fix-silver-multi-fix-masonry-bolts-14-x-100mm-pack-of-10/62090

Was thinking of placing one every 30-40 cm. one at the top next one at the bottom of the beam.

 

[Crystalclear]

Hummm, 14mm looks a tad of an overkill? Do you have a 14mm masonry drill bit? Or an Sds drill bit?

I'd say 10mm is ideal. 100mm is just under 4" so should sit just inside the brick. Anything over 4" will just come out of the other end and be wasted. You'll see how strong of a fixture it is once you've put them in.

Max 40", or 1.5ft apart.