How to fit a upvc window

We have put this guide together to help people who have never fitted a window before but want to have a go at fitting themselves. The most important step is ensuring that the new window will fit within the brickwork opening left by the old window. We would suggest that you measure at various points in the aperture and go from smallest point minus 10mm.

TOOLS REQUIRED

  1. HD GLOVES AND GOGGLES
  2. TAPE MEASURE (METRIC)
  3. PENCIL
  4. LIGHT HAMMER
  5. MASONRY CHISEL
  6. PHILLIPS SCREWDRIVER
  7. SPIRIT LEVEL
  8. CORDLESS HAND DRILL
  9. HAMMER DRILL
  10. DRILL BITS

                            3mm Pilot Drill

                            8mm HSS Drill

                            8mm Masonry Drill

  1. SKELETON GUN (MASTIC APPLICATION)
  2. SPATULA
  3. TYRE LEVER – NAIL BAR – CROWBAR
  4. CROSSCUT SAW
  5. PLASTIC BIN

BEFORE YOU START

  1. As upvc windows are not designed to be load bearing, a lintel may be required above window. If you are unsure, please consult a qualified fitter/surveyor
  2. Check size, style and handing against order.
  3. Before removing existing window, check opening sizes, remember that new window should be 10mm smaller in height and width than brick opening.
  4. Clear any obstructions from site of window.

REMOVAL OF EXISTING WINDOW

  1. Cover immediate site with durable dustsheets inside and out.
  2. Using screwdriver/nail bar remove opening sashes
  3. To remove glass in remaining window fixed lights (wearing safety wear) carefully crack glass in corner from inside the window, remove cracked shards and deposit into plastic bin.
  4. Using a Stanley knife, break plaster seal around periphery of window on inside.
  5. Using a crosscut saw. Cut through remaining mullions and transoms and remove.
  6. Paying close attention to minimise damage to plaster, brickwork and damp-proof membrane. Cut through the jambs, head and cill of remaining outer frame.
  7. With careful application of nail bar, it should now be possible to lever framework away from plaster and brickwork with minimum disturbance.
  8. Remove any projecting cement accumulations with your masonry chisel and clear any debris from opening.

FITTING OF NEW WINDOW

  1. Measure cill and cut to required size (scribing horns for around brickwork if required). Screw cill to underneath of window, being sure to run a line of silicone to back edge of cill prior to fixing.
  2. Using plastic packers, position window in opening with approximately 5mm all around to brickwork, without bowing frame. Use spirit level to ensure as plumb as possible.
  3. Remove glazing beads from window, being sure to mark position of each bead and place safely to one side.
  4. Secure the window into position with fixing bolts 150mm from each corner and at 600mm increments thereafter. Ensure that no screw heads are standing proud as this may obstruct glazing.
  5. In all fixed apertures and push out openers, place 2 bridge packers in bottom of aperture with appropriate size packer on top to sit unit in centre of aperture. (for side hung sashes or doors, see attached toe and heeling sheet for position of packers)
  6. Place sealed units in apertures, adding packers as required and fix top and bottom beads, then side beads last. Open and close sashes to check they don’t catch.
  7. Tape round window with masking tape and carefully gun round outside of window with silicone and inside with caulk. Leave for one hour to go off.
  8. Remove protective film from window and clean down frame with solvent (except wood grains as this will damage veneer) and glass with glass cleaner.