Hatch linings are used to gain access into roof spaces and through walls.
They are normally located in a convenient location such as a bedroom or on the landing and enter the roof space an area that gives you some headroom.
Or as a serving hatch at waist height between the kitchen and dining room
They are usually made from either softwood or even man made boarding such as MDF nowadays.
TASK STANDARDS
To complete this task the candidate must construct and fix a hatch lining according to the specification
The candidate must select PPE, tools, equipment and materials
You may have a copy of the diagrams during the practical assessment. Your assessor will support you with this
This task can be pass, merit or distinction.
Pass
The lining was parallel within 3mm
No gaps in the joints exceeded 2mm
The lining was square within 3mm
Fitted to opening plumb (both ways) within 2mm
The fitted lining was square within 3mm
The lining was fitted to allow for 13mm plasterboard within 3mm
The lining was without a twist exceeding 2mm
Merit
The lining was parallel within 2mm
No gaps in the joints exceeded 2mm
The lining was square within 2mm
Fitted to opening plumb (both ways) within 2mm
The fitted lining was square within 2mm
The lining was fitted to allow for 13mm plasterboard within 2mm
The lining was without a twist exceeding 2mm
Distinction
The lining was parallel within 1mm
No gaps in the joints exceeded 2mm
The lining was square within 1mm
Fitted to opening plumb (both ways) within 2mm
The fitted lining was square within 1mm
The lining was fitted to allow for 13mm plasterboard within 1mm
The lining was without a twist exceeding 2mm
WHAT YOU NEED TO DO NOW
Study all the resources provided for this task, including videos, drawings, and written instructions
You should practice the techniques needed and fully understand what’s needed before attempting the task, your tutor will tell you when you are ready
Always work in a safe and tidy way
Make sure your work has your name on it and is stored safely at the end of each session
Don't forget to complete the sign-off documents with your tutor
IMPROVE YOUR SKILLS
Once you have passed this assignment, you can improve your skills with the optional extension tasks provided. These are a tongued housing joint to construct the loft hatch
Do your own research to find out where loft hatches are located and the name of the members they are attached to in walls and roofs.
Once you have completed your practical task you need to discuss your results with your tutor and complete some sign off documents, your tutor will show you how to do this.
Select two straight, knot-free sections of timber from 95mm x 20mm stock.
Measure 440mm from one end using a steel rule.
Use a square and a sharp pencil to square a line all round.
Secure the timber on a bench hook and use a tenon saw to cut to length. Make sure you saw on the waste side of the line as you have been shown in this video
Measure 20mm from one end and mark the shoulder line, then mark the next line 20mm parallel to that.
Use a marking gauge to scribe 6mm down from the face.
Make the shoulder cut using a bench hook to hold the timber and a tenon saw.
Hold the timber in a vice and carefully chisel out the housings using a 19mm bevel edged chisel.
Cut the two timbers 722mm long from the 95mm x 20mm stock.
Assemble the four pieces together in a dry fit.
Once happy apply glue to all joint surface areas and re-assemble.
Using clamps apply even pressure across both joints.
Check with either a square, lathe or even Pythagoras theorem.
Insert fixings screwed/nailed
Wipe off excess glue
Insert the loft hatch into the opening.
Use folding wedges to take up the gap between it and the framework.
Using screws, place two fixings directly central to the folding wedges.
Once you have fixed in place, carefully cut the wedges flush to the framework.
Check your work for the correct overall dimensions.
Check for square, to make sure when you fixed it you didn't pull it out of square.