How to strengthen woodedn 1940 stairs..

[broody]

My stairs are little worse for wear, just moved into a 1940 house and tring to get bits n bobs done, the stairs dont feel tight and move quite a bit, here are some pics, how do i strengthen them?

In this picture you can see two broken bits, a tread and a riser, any idea how to sort this out without replacing both bits?

Thanks for your help.

Neil

 

[big-all]

wedges seem to be missing under the top tread
[triangular]glue blocks missing between most steps
my suggestion replace the wedges then glue with pvu foaming glue underneath[in all areas ]
cover the cracks with 12mm ply screw and glue into place with foaming glue
make sure all treads and risers are pushed/propped home before gluing
replace the missing blocks and glue
http://www.toolstation.com/shop/p93568

 

[broody]

Will any Polyurethane Wood Adhesive do as I'm not sure homebase will have that exact type, do the wedges have to be wedged shaped? I have lots of blocks left over from a ceiling I did, or is the wedge shape a part of the design for support? Should the ply go on top of the tread? Wouldn't this make on tread higher then the rest?

Cheers for help,
Neil

 

[big-all]

no underneath in all areas
if you cant cut any wedges to fit in the sides just go for a large triangular 12mm ply plate and screw and glue tight under the tread and or riser
order the glue from toolstation free postage on £10+ orders next day delivery if you order before 17.00