Custom Built Office at Whimple, ExterOutbreak Office, size 16' x 10'Retreat Office - front viewRetreat Office - side view

 

Technical Drawings
(click to enlarge)

Section A - A: roof, wall & floor construction
Detail A - drawing undergoing revision
Side elevation 1
Side elevation 2
Rear elevation
Front elevation
Plan of 12' x 10' Office on 16' x 16' deck
Section A - A Office on decking
Side elevation
Front elevation
Rear elevation
Plan

 

  

FOUNDATIONS
 Concrete raft or 450mm x 450mm Concrete Blockwork Piers, height approximately 150mm adjusted to suit site ground levels.

WALL CONSTRUCTION (See Detail A)
50mm x 100mm framing at 600mm centres, with 9mm conditioned OSB  as used in timber framed housing.  Lined with 'Difflex 100' waterproof and breathable membrane.

50mm x 25mm counter batten creates 25mm ventilated cavity.  The batten then carries the external cladding which effectively becomes a weather shield and is not relied on to create a waterproof wall.  External cladding on the Retreat is ex.100mm x 38mm vertical semi-circular profiled tongue & grooved board.

Internal wall is  infilled with 50mm Jablite polystyrene insulation board, heat retention value ('U' value) of 0.5 W / m2K.   Internally lined with plasterboard or tongue and grooved pine board.

FLOOR CONSTRUCTION
18mm flooring plywood, supported on 100 x 50 softwood timber joists, infilled with 50mm Jablite Polystyrene insulation board.   Joists carried on Blockwork Footings. Minimal 50mm ventilation air gap maintained under floor construction. ('U' - Value of 0.45 W / m2K)

ROOF CONSTRUCTION
Trussed or cut roof design depending on customer's requirements. Roof Pitch normally 35 degrees or to individual requirements.

100mm fibre glass insulation laid between truss rafters, over ceiling consisting of tongue & groove ceiling board, installed beneath vapour barrier; heat retention value ('U' value) of 0.4 W / m2K

'Onduline' corrugated roof sheeting on 75mm x 50mm softwood purlins.
Roof ventilated through 10mm continuous air gap at eaves level.

DOORS / WINDOWS
Quality pressure treated softwood windows and doors fitted with double glazing; door features toughened double glazing . Pressure treated Softwood door frame with hardwood sill.

EXTERNAL DECK (Optional)
150mm x 25mm Hardwood profiled decking with reduced slip grooved finish complete with relevant balustrade.

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AVAILABILITY

Usually 4-8 weeks from date of order.

COST

Price £2000 base price + £30 per sq/foot.

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PLANNING PERMISSION

Through our investigations it is unlikely you will need planning permission if:

  1. The structure is less than 4 metres tall.
  2. It is more than 5 metres from  the house
  3. It is less than half the size of the garden

For more detailed information you can visit the government's planning portal website here.  

We recommend that you check with your local planning authority, contact details may be found by selecting here and then entering your postcode in the "Specify a Location" box. . 

 

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