Garden rooms faqs

·No installation instructions are provided, we advise you procure the services of a competent installer however our fees include VAT & delivery. 

·If you would prefer to pay a 40% deposit payable at the point of order, and the remaining balance the day before dispatch, please call us and we can arrange this for you.  We will contact you the day before your kit ships to take final payment.

·The base must be prepared and installed and is not provided with the kit, either a level concrete base the same dimension as your studio or screw piles are recommended. 

·Delivery will be made to the address provided, all items shall be palletised and offloaded to the front of the property (roadside). 

·Cladding - fixings shall not be provided within the kit, your installer shall be required provide this. 

At the BC Bespoke premises there is The Langdon built in order for customers to come and view if required before purchase.  We can arrange a date and time suitable to you, please just contact us via our homepage. 

Structural Insulated Panels (SIPs) are a composite panel that can be utilised for wall and roof structures and are known as a Modern Method of Construction (MMC). SIPs are framing, insulation, and sheathing in one prefabricated component.

SIPs are made with Oriented Strand Board (OSB) faces; however, they can also be manufactured using other sheet materials such as Plywood and Cement Particle Board (CPB). SIPs can be manufactured with different cores including: Expanded Polystyrene (EPS), Graphite Infused Polystyrene (Neopor EPS), Polyurethane (PUR) or Polyisocyanurate (PIR). SIPs are manufactured utilising an injected closed cell Polyurethane - rigid foam system, sandwiched between two structurally rated skins of Orientated Strand Board (OSB/3) that can provide continuous structural integrity and superior insulation within one component. SIPs product ranges include: Residential (Available with 11mm or 15mm OSB) and Commercial (15mm OSB).

SIPs can be utilised in virtually any construction project (residential, leisure, commercial, education, retail), as structural envelopes or in-fill panels within a steel, concrete, or timber frame.

The main benefits to building with SIPs are: 

• Superior Insulation provides improved energy efficiency which reduces heating and cooling costs. 

• Installation time can be reduced up to 60% against traditional construction therefore minimising overall onsite costs due to reduced, project management, plant hire, welfare facilities and most importantly labour. 

• Factory controlled manufacturing provides a consistent and accurate engineered product allowing for easier and precise installation. 

• Offsite manufacture results in less waste on site.

• Up to 7 times stronger when compared to timber frame construction

Any foundation method can be used with SIPs; however, the tolerance level should be no more than +/- 5mm to allow for easy installation.

SIPs are an accepted form of construction and raise no issues when obtaining planning approval. Garden buildings do not require planning permission if the building is within 2 metres of any boundary, they are 2.5m overall height or 3m if not within a 2-metre boundary. The maximum footprint is 30 m2, anything after that you will require planning permission and structural calculations.

The initial, up-front cost of a SIP build over traditional methods i.e., timber frame or brick and block, is typically higher depending on the complexity of the design. However, the savings in construction time, reduction of material waste on site and improved energy efficiency of the building will bring significant savings, making a SIPs construction a long-term cost-effective solution.

The time savings over timber frame or traditional methods of construction can be significant if an experienced SIPs installer is undertaking the build (up to 60% less). The separate steps of timber framing, insulating, and sheathing are eliminated thanks to the composite nature of SIPs. 

External finishes are numerous and come down to personal preference, you can have traditional cavity and brick or stone wall, render, brick slips, timber cladding, slate, copper, zinc, stainless standing seam, etc.

Structural Insulated Panels are made from timber which is sourced from managed plantations. Timber is considered a sustainable building material because it is derived from a renewable source and has low embodied energy. The Polyurethane (PUR) core in our Structural Insulated Panels is CFC/HCFC-free with zero Ozone Depletion Potential and has a “Less than 5” value for Global Warming Potential (GWP).have questions, you have answers.