Self Installation Guide


Part 1 Considerations - Permissions, Tools, Surveying and Calculating Materials
Planning Permission and Building Regulations
Tools required
Check if your building is perpendicular
Mark out the ground
Calculating the the Volume of Concrete required
Calculating the the Number of Bricks required

Part 2 Construction - Foundation, Dwarf Wall, Cavity, DPM, DPC
Level the Concrete Foundation
Dwarf Wall Construction
Infilling the Cavity
Preparing the Internal Floor surface - Damp Proof Membrane
Damp Proof Course

Part 3 Installation - Cills, Frames, Leveling and Roof Support
Cill Size and Position
Installation of Window and Door Frames of conservatory
Leveling the Frames
Check your Dimensions
Fitting First Roof section

Part 4 Flashing - Flash Band, Lead - Parallel, Stepped, Capping, Plug & Mortar and Tamping 
Flash Band method
Lean-to or Flat roof flashing
Parallel Lead Flashing
Stepped Lead Flashing
Capping Flash
Plug and Mortar lead
Tamping the lead into place
Roof assembly guide

Cill Size and Position

The cills may not have been cut exactly to size, the reason for this is to give the installer a little leeway, the extra length in the cill is only ever in the Width dimension, not in the length. This is to allow adjustment if say the house had some outward lean.

Place the cill on top of the wall, the back edge of the cill should when fitting correctly align flush with the back face of the external brick. If it dose not, measure the gap from the back face of the external brick work to the back edge of the cill. This is the length that should be trimmed off the end of the cill. Once trimmed, an end cap should be fitted on the cill and bonded in place with super glue.

Installation of Window and Door Frames of Conservatory

Place the cill on dwarf wall. This is not fixed down but should 'float' free on the wall or plinth.

Install first window or door frame and fixing it to the cill on the dwarf wall. NOTE: Do not fix the window or door frame to the house nor should the fixings that hold the frames to the sill penetrate or fix to the dwarf wall. The position where you screw through on the frame is important. Shown in diagram is the position on the inside of the frame that you can screw through. There is a low raised section in the frame where the glazing units themselves rest upon. It is through this that it is safe to screw to attach either to another frame or the cill. The frames and cill should float on the dwarf wall. When the frame is place on the cill, using the mastic provided, run two beads along the cill to ensure a good seal.

Work around from the first frame, fixing each frame to the cill and adjoining frame, to the other side of the conservatory and back to house wall. Again, do not fix the frame to the wall of the house.

When you get to a corner where to frames meet at an angle, corner posts must be used. Place the post at the corner of the frame and check it for height, as they are sometimes cut longer than required. If the post is to long simply mark it using the top of the frame for a guide and cut to length. When it is of the correct length, screw through the frame as usual.

Leveling the Frames

With all of the frame screwed to each other and the cill, the next stage of installation is leveling the frames up.

Using a spirit level, place the level on the top of the first frame and check if the frame is level, working your way around each of the frames until you find which frame is MOST out of level, i.e. a point on one of the frames which is HIGHEST. Working from this frame, find which is the lowest side of the frame, and use packers placed UNDER the cill to raise the lowest side of the frame up to make the top edge of the frame level. Packers come in various sizes and  you can use more than one packer at a time to adjust the frame to level.

You should also ensure that the frames are sitting vertically with the spirit level, that they lean neither into or out of the conservatory. 

Working back from the starting frame, make the connecting frame come to the same level, using the packers.

Check your Dimensions

At this point you should check the sizes very carefully , check the width, length and diagonal dimensions. The frames and cill can be adjusted slightly to the correct position.

Fitting first Roof section

This guide does not tell you how to install the roof of the conservatory, as each style of roof is very different and so requires unique and individual fitting instructions and is therefore beyond the scope of this guide. That said,  along with the delivery of the roof components of your conservatory, you will have received an installation guide to enable you to complete its installation. This will explain to you what the individual component parts are of your conservatory. 

The first part of the roof that you require is the wall plate

With the plan of your conservatory, measure the position where the wall plate should be fixed. Once you are sure of this position, using wall fixings, place one screw at each end of the wall plate and two more in the middle, so that they are equally spaced.

Now fit the two end bars of the roof section from the wall plate to the top of the frame. 

All that is required at this stage, regarding the roof, is that the line or pitch the roof will take down the wall of the building can be identified. This is to allow you to accurately mark out the flashing line on the wall of the house. Once this has been identified, you can go to the next stage of flashing the frame.

Please Note: This is a guide only, PVCu Manufacturing Ltd accepts no liability whatsoever as to the accuracy of the content, be it  errors, mistakes or incorrect advice either in the document or from your use of this document in construction of your conservatory.  If you have any doubts you should always seek advice from your local planning office.