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Roof dormer extension with windows in Macclesfield Cheshire.

Dormer Conversion form outsideDormer
Conversion		Dormer picture from within, towards the staircaseDormer
Conversion		Picture of dormer extensionRear
Dormer		Picture of dormer extensionRear
Dormer
Dormer ConversionDormer
Conversion		Dormer picture from right of staircaseDormer
Conversion		Windows along dormer side wallWindow
Bank		Picture of dormer extensionRear
Dormer
Dormer plasteredDormer
Plastered		Dormer stair landing windowLanding
Windows		Loft staircase - from dormer landingStair
Landing		Staircase - from below - there was not even enouth stair height for boardingUnder the Treads
Dormer extension with windows and boardingDormer
extension		Dormer extension - windows and view, door and partitionDormer
(internal)		Dormer staircase - spacesaving constructionStair
Construction		Dormer staircase - space saving and inch perfectStairway
Dormer extension view from stair entrance doorwayStair
entrance		Dormer extension external view of construction during building workDormer
(external)		Below the three windows is a knee wall cupboardThree
windows		Dormer room - Velux in one side, extension on other to maximise headroomDormer
width
Dormer frame in the roof (right side). Steel lintel showingDormer frameDormer frame in the roof (left side). Steel lintel showingDormer frameSteel lintel (ridge board) fixed securely in positionSteel LintelRoof lintel is installed and secured. The shoring up of the opposite roof side can be identified.Lintel & Shoring
Dormer frame installed into roof (left view)Bedroom 2Dormer frame installed into roof (right view)Bedroom 2View from inside dormer bedroom. Roof joists, Velux window, insulation, electrics and boardingRoof joistsFraming within loft and dormer is visibleTimber frame
Weatherproofing of dormer construction whilst building work progressesWeatherproof constructionWeatherproofing of dormer construction whilst building work progressesWeatherproof constructionInside dormer structure, Kingspan insulation, dormer cheeks, boardingInside dormerInside dormer structure, Kingspan insulation, dormer cheeks, boarding (from right)Inside dormer

Full Roof Dormer Extension Macclesfield, Cheshire.

This is a full span dormer construction to an existing roof. The conversion required lowering of the ceilings below (additional), reinforcement of the ridge board and framing of the dormer. Price guide £17,499.

Dormer plans

The owners of this turn of the century terraced house already had the roof dormer architects plans and planning permission for this dormer extension, however the Building Control Officer immediately required revision of these dormer plans because they failed to take fully into account the inadequacy of the existing ridge-board (the wooden beam used as the main horizontal support at the apex of the roof).

To comply with Building regulations an experienced planning technician - such as our own - would have anticipated that a full-span dormer window conversion - one which extends the width of the property - would require reinforcement of the ridge board.

The BCO had plans modified to include the reinforced steel girder.

Reinforcement of roof

To install the 5.5 metre RSJ (95 kg) the roof was stripped down on the dormer side (this relieved weight) and the other roof side was shored up on its underside.

The rafters were cut out and removed so that the ridge board was released. This was replaced with the rsj (Compliant with The Party Wall Act 1996), which had pad stones located under each side. The rsj (steel lintel) was then cemented into position.

Either side of the dormer extension, substantial 6"x3" timber joists help to 'wedge-fix' the lintel.

The dormer frame was then constructed also from 6"x3" timbers and dormer cheeks added (5"x2" timber).

The opposite roof structure was then unshored and roof temporarily sealed to make weatherproof and for further internal work and insulation to be developed.


Procedure (How to..)

  1. Lower the existing ceiling joists to create additional dormer headroom (additional) to the usual quotation.
  2. Install a new loft floor
  3. Install Velux windows into one side of roof
  4. Shore up one side of roof, strip the tiles and remove joist on other.
  5. Install new steel lintel (ridgeboard) and secure
  6. Stair construction - BCO did not believe it could be done within height! but it was, due to our exceptional skills.
  7. All BCO inspection and approved
  8. Framing of dormer and building of dormer cheeks
  9. Insulation plaster boarding and plastering

Price guide
Contact
0870 7575 010

Loft Conversions in Cheshire, Greater Manchester and Lancashire



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