Fitting New Floor Joists Loft

Clearing the loft area of all debris insulation struts and temporary boards to expose the.

Fitting new floor joists loft.

First off basic floor plan of the loft. If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists. A basic floor system is installed in about 10 stages from preparation to boarding the floor. This means that new floor joists are fitted alongside them slightly raised above the ceiling plasterboard to avoid contact with it.

I plan to leave the old joists in and sister them up. You can still board directly on to the joists if you want but it is worth noting that this would not. Purchase the type of lumber that matches the width of the existing joist. Measure the width and length of the existing joist.

I would really appreciate some advice on fitting some new joists for a loft conversion. I ve read previous posts on this topic but found conflicting views. Hard lines are the walls on the first floor underneath joists on the first floor landing run left to right so does that mean the central wall running front to back is load bearing. Structural engineer has specified 9x3s as the new floor in the loft.

I have plenty of trade experience as i am an electrician but am unsure of a couple of aspects regarding some of the. There are many ways of altering roof structures for loft conversions but they all have one common element the ceiling joists will almost certainly be inadequate as floor joists. A new floor system is installed using a frame trimmer joists to support the floor joists that span the width of the loft. Sistering is the process of adding a new joist next to each existing joist.

Installing new joists for loft conversion. In the case of 2x6 joists you can pair them up with additional 2x6 joists by nailing them together side by side. I am currently at the planning stage with my proposed loft conversion which i intend to carry out myself. Total loft dimensions are 5 2m left to right 7m front to back.

5 posts page 1 of 1. By flyingveepixie sun may 03 2009 10 09 am. How we install a new loft floor.