7/8/12

So yesterday,we started off in class with a small session of catch for the rest of the class.Steve came in and took the session for the morning.Me and Brad were already up to date with our assessments,Moodle,Blogging and quizzes.So we were instructed to go ahead and move on to the house.My first task was installing facing boards for the outside windows on the weatherboards.I had to cut go ahead and cut some weatherboards into small packers,Phil made a scriber for the blocks to sit nicely to,then a strip of timber is nailed to them with finishing nails.Then the facing boards are nailed on.The bottoms of the facing boards are cut on a small angle to sit flush with the outside sill under the window.Our boards were to overlap the outside of the window by 10mm.This is to prevent weathering from getting in from behind.We were going to move on with the head flashings for the windows but it turned out that the flashings we were sent were the incorrect lengths.

After Smoko we moved back on with the roof.Me Mark,Brad and Takey went out and carried on.We had all our sheets at 60mm from the face of the facia board,The overlap is needed for the run off into the guttering.The longer the better as water cannot run back up under the roof causing the materials to rott and or weaken over time.The tool used was called a "nibler" This was used to cut the sheets of iron for the roof.We used a chalk line to ping a line to have something to follow to give us a nice finished cut.We then fixed the sheets down with techscrews,These are not to be over tightned as these can put pressure on the sheets and burst the rubber seal under the screw.The offcuts we have can then be used on the opposite end of the house as the overlapping patterns will be the same but different to the ones you have just cut them from.We no longer staple the building paper down as we just lay it under the sheets of iron.The iron is more then enough to hold the paper down.And once its screwed down they ain't going anywhere.

31/7/12

Today we finally moved on to the ROOFING!We started with crimping the ends of the iron at the tops,as this prevents water from getting into the house under the ridge caps.We cut the paper to,4900mm for the underlay of the iron.Our screw patterns for the top and bottom are 1 in then two gaps then one in ect.For the intermediate purlins,It was 1 in,2 spaces,1 in,3 spaces ect.Less screws are required for the middle purlins.We used chalk string lines to mark down where our screws are to be placed.I had a rattle gun with the tech screw piece.The screws are not to be fully screwed right down as the pressure can crack the rubber seals underneath the screws causing small leaks.

To get the first sheet straight,We done a 345 on the roof,marked 3 on the top purlin and 4 on the sheet of iron,Then matched it up to 5.We then tacked the sheet in place with a couple of nails.Another way of checking it for square is to have a string line up the top of the roof and one at the bottom of the roof,then you can move them around till they fit nicely between the string lines.

The other part of the class went ahead with the exterior window facing boards.We will be doing that tomorrow when we rotate.The tools we will be using are routers,chizels and many more.Primer will also be used to keep the freshly cut timber treated from the elements.