Thread: Raised Decking - Advise ?

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I need your advice wheither I should pull off the brick paving prior laying timber decking ?

Or place timber decking on top of brick paving ?

You need to remove the brick paving and sand base because it is not a solid foundation.
I would then run a wall ledger along the wall at the right height. This will support your joists against the house.
You could then put your stirrups into the ground with concrete and instead of usinng them for stumps (because you have virtually zero height) you can set up a line of them (9m long) at the 2m mark and again at the 4m mark and lie down your bearers inside them. So now you have a wall ledger attached to the house running 9m amd two rows of bearer running 9m. So three lines at 2m apart. At every post support / bearer intersection you use a 45mm block to pack the width of the stirrup because your bearer is loose as it is only 45mm wide at the stirrup is 90mm.
The thing is I think you will have to have your joists sitting inside the bearer, not on top, meaning that bearer and joists will be on the same level so instead of having 4m long joists you will have 2 x 2m joists for the same line but attached to the inside face of the bearer not sitting on top.

But definetely no timber on the ground and if you are going to go through with building the deck then remove the pavers and sand. Do it properly.

That's what I would do.

Or actually you could remove all the pavers and sand and pour a slab and screw treated pine battens sitting on top of plastic packers and lay your decking on top of that.

Cheers,
Dr - 307.

Hey Dr 307,

I had measure the height of the door to the top of paving is 180.

That give me the problem with not enough space between ledger and bearer , joints.

How about put 90x45 on Ledger bolt to wall and 90x45 bearer, put 140x45 joints on top of ledger and bearer ? using 19 x 4 metre joints @ 500 spacing

If possible do you have diagram or where can I find the diagram ( drawing ) to suit my size 9m x 4m

Originally Posted by kevvy

Hey Dr 307,

I had measure the height of the door to the top of paving is 180.

That give me the problem with not enough space between ledger and bearer , joints.

How about put 90x45 on Ledger bolt to wall and 90x45 bearer, put 140x45 joints on top of ledger and bearer ? using 19 x 4 metre joints @ 500 spacing

If possible do you have diagram or where can I find the diagram ( drawing ) to suit my size 9m x 4m

Like Dr said, rip the bricks out and replace with a concrete slab. Then simply dynabolt 70x35 TP to the slab (Bearers), then run 90x45 TP on top (Joists) Decking on top brings it to 180mm.

This is not encomical for me as I have to double the cost for concrete slab and timber decking.

I will rip the brick out and the sand as well, this will expose the road base below and I will try my best to see how much space I can get from this point.

Since the roadbase will be lower than the grass level, this will cause flooding around roadbase on wet weather.

rip out the bricksand sell them on ebay .....this will help offset the cost of concrete

Don't sell the bricks, relay them as a path around the deck. You are best not having the turf run right up to the deck, a border of pavers around the deck will look nice as it will frame it and also is far more functional. When you relay the pavers put a good fall on them away from the deck onto the lawn, this should help to keep the water out from under your deck.

hi kevvy

20cm sounds to me plenty of room to build deck base on top of layed brick patio .

personaly , i would use 80mm x 40mm steel patio tubing for the base , this would give it a rigid and termite free base . it will also contibute to a then required step down onto the lawned area .

there is also a range of pvc / composite decking available if you are looking to get completely termite free .

Once you have removed the paving what height will you have from ground level to underside of deck bearers. My understanding is that you will need about 450mm to meet standards, have you checked with council.

If it doesnt comply and catches on fire or otherwise damages the house you will struggle with insurance.

I would check this b4 deciding.

good luck