Sms Timber Frame now manufacture their own Pois-joists and price for these as standard to be included in every project we do. We are partnered with Miitek and take care of the engineering and manufacture of the posi’s our self with our specially designed press. Our floor structures, are engineered to be 50% stronger than is reqired by Building Regulations ( We don’t do squeaky floors ).
What are Posi-Joists and their advantages?
Posi-Joists are hollow joists where by a top and bottom chord are joined together using metal webs, they ARE stronger than standard solid joists and can there for span a greater distance which will save money on timber and costly beam / steel support in some cases. 
Posi-Joists can be used in both floor and roof structure, and can be manufactured in cassette form just as solid joists can.
Advantages Of Posi Joists
- They are lightweight and can be top hung directly onto the timber frame panels, this speeds up the erection process.
- They are manufactured by Sms Timber Frame to be ROBUST and are stronger than solid joists.
- All of the Posi-Joists are pre-manufactured which adds to the off site manufacture process, this minimises time at site level.
- Generally our posi joists are top hung, which minimises shrinkage and differential movement.
- Minimum Posi-joists widths are 72mm as oppose to standard joists that are usually 44mm wide. This makes it easier for fixing the floor deck but also plasteboard finishes.
- Services and ducting can be run through the Joists VERY easily, no drilling or notching is required speeding up site works, and omitting the need for boxing, duct work, and soil pipes.
Thank You for Reading.
Thomas Smith
smstimberframe 