Jouplast Adjustable Risers (Accessory) - Decking/Timber Support - 10mm Extensions Piece (Pack of 60) (Extension 10mm)

I only bought a few of these to help sort levels before installing cemented posts. I found these very useful for adjusting heights and moving between areas. Handy too, where the joist is slightly bevelled. Only criticism is the green part is slightly brittle and bits snap off easily if you catch it with your boot.

Too much spring in a suspended floor was cured by removing the boards, in my case chipboard. I then placed a piece of 3 x 2 across the floor joists which in turn was seated on adjustable risers at intervals of approx 50cm . The risers adjust to tighten the cross joist under the floor joists. Although tight to the sub floor and the underside of the cross joist they are held in place with a screw through a small flange on each riser. Note that they are available in different heights with a good 50/60 ml of adjustment to each one. Its worthwhile putting a decent packing of ply between the sub floor and the base of the riser for extra stability. A really useful product which I have now used on the whole of the ground floor of the house, insulating between the joists with kingspan.

ok work well, just too expensive

Great product so easy to use and adjust, saved hours levelling of decking frame. Would most definitely buy again.

Used for decking support. Very much impressed..Decked an area around 4m x 3m and used these to get everything set and squared off as they are so easily adjustable to the height you require. I then used a few other methods as additional support.All finished now and sturdy enough for family and friend gatherings no problem.

made laying the decking a breeze, only thing I would say is dont under estimate the unevenness of your ground, I could have done with the next size up in places !! but as the product I bought goes , fantastic !

What a brilliant product, saved so much time, and I didn't have to dig loads of holes, or buy posts and concretete

Great product,fantastic service in these tough times came 4 days earlier than expected. Will be ordering more as have more decking to do