Now that the beam was sitting nicely in place, the roof could begin to take shape. Inserting new roof timbers would give a guide to finish the block work gable ends.

Beam sits on the pad stone at the gable end
Roof rafters meet neatly at the apex. They sit one the ridge plate and the wall plate.

The roof timbers were cut and fixed to the timber ridge plate that sits on top of the beam. The building inspector suggested strapping the rafters to the beam for extra security. This method would ensure that a strong wind would not shift the roof since all the members were joined together.

Cutting the angles can be a little tricky. The top of the rafter needs to fit neatly and snugly against its opposite rafter. The right angle notch at the beam and at the wall plate also need to be taken out allowing for the pitch of the roof. It would have been simple to make one rafter and then just copy it several times, only buildings tend not to be exactly square. A template rafter was used for a few rafters, checking to see if it sat well before cutting the next.

Who said you never use maths in real life? I would want to work these angles out on paper first but my husband is experienced enough to just go with it and work them out on site.

The rafters sit on the wall plate. The overhanging length would be cut later.

The steel beam allowed for us to have an open roof structure without the truss spanning timbers which would normally stop  the roof from splaying.


The original design had two roof windows. We changed this to a single window but a slightly larger one. The rafters were carefully thought out so that the window would fit into the roof between two rafters with one cut rafter in between. As the opening had to cut through one rafter, the frame would be double trimmed and strapped to maintain strength.

The inside of the roof window showing the double trimmed frame and the later installation of insulation.
The inside of the roof window showing the double trimmed frame and the later installation of insulation.

Roof windows should be fitted to the manufacturers specifications. You will probably need to purchase a window and the flashing kit with it.


Please check out my previous Tiny House blogs here:

Update: Tiny House Building is now a book with more detail than the blog. You can buy a copy of it here.

Or my fiction sample chapters here (you will need to scroll down to start with chapter one of either The Times of Kerim or The Days of Eliora):