Please select a question below.
The majority of timber used by Taylor Lane is Scandinavian softwoods. We ensure that all of our timber suppliers source their materials from renewable resources and expertly managed forests.
It is important that all timber used in the structural shell is comprehensively treated against insect attack, general decay and complies with the requirements of the N.H.B.C. and the Building Regulations 1995. Timber used in different areas and applications within the structure will be treated with a different material. For example ground floor soleplates and cavity barriers will be treated with a strong material such as Tanalith, whilst studwork and floor joist timber with a water based treatment such as Vacsol.
What external wall thicknesses do Taylor Lane supply & what are the advantages of having a thicker wall panel?
Taylor Lane supply two wall thicknesses as standard which are using either 90 x 38mm or a 140 x 38mm studwork. Timber battens can be fixed to the internal face of the panel to thicken it further if required. All external panels generally have an outer sheathing of 10mm OSB (sterling board) or similar and breather paper fitted using polypropylene tape. Using a wider wall panel enables you to include a thicker layer of insulation in between the studs. This will achieve better U values, resulting in a more energy efficient house and so reducing heating bills. The average extra cost for having 140mm external panels in lieu of 90mm for a 3/4 bed house is generally in the region of £1250.
Width of external panel available and the U Values achieved are as follows – (based on insulated timber frame panel / 50mm cavity & 100mm brickwork external skin)
External panel thickness 90mm 140mm
U Value (0.35) (0.30)
There are various types of insulation available depending on the application it is to be used for and the required U values to be achieved.
TIMBER BATTS – A semi-rigid unfaced slab designed to give thermal and acoustic insulation and fire resistance. It is push fitted between studs at 600mm centres and is made from natural materials and recycled glass. Batts are the most common form of timber frame insulation and are used in internal panels and either 90 or 140mm external panel applications.
ROLLS – A product that is produced from fine, non-combustible glass mineral wool and generally used in horizontal applications such as roof and floor areas.
POLYURETHANE – Expanded plastics that are used when high insulation values are to be achieved as they have excellent insulation properties. It is generally used as a rigid board for installation in sloping roofs or even between the studs in external wall panels. It can also be sprayed in situ as an expanding foam to follow complex shapes.
WARMCELL – This is an insulation material made from recycled material such as paper. It is blown into the required area pneumatically by specialist contractors on site from a van mounted machine. It is used in wall panels, horizontal and sloping roof areas and floors and can result in high U values.
EXPANDED POLYSTYRENE – An economic cellular plastic made by foaming polystyrene, usually supplied as extruded board. Different grades are available for roof decks and under floating floors. Taylor Lane supply a 60mm board for floating ground floor applications.
The standard cavity that Taylor Lane work to is 60mm below DPC level. The external sheathing board on the panels overhangs the soleplate and takes up 10mm of this cavity to give a standard 50mm cavity above DPC.
How long does it take to erect the timber frame and at what stage is the house at when the erectors leave site?
The installation of a standard 3/4 bed house will take on average 7-10 working days. When the erectors leave site you will be left with a complete structural shell including wall panels, floors and roof trusses that are braced. The first job for the client to do after the erectors leave site is to bring in the roofing company to felt, batten and tile the roof to make the structure watertight and put a loading on the frame. Various trades can then be brought in to work both inside and outside the structure at the same time.
In the past many timber frame houses did not have insulation put into the internal panels which gave people the impression that this form of construction was noisy. Taylor Lane supply semi-rigid batt insulation to all panels for the client to fit between the studs. Tests have shown that a 90mm internal panel has the same sound reduction qualities as a single block internal wall.
Sound insulation is at its most important with party walls and floors between houses and flats in which timber frame construction also performs extremely well.
Party Walls – We achieve the current requirements specified by Part E of the Building Regulations and adherence to Robust Detail E-WT-1, through our stipulation that dry lining to party walls with a minimum mass of 22Kg/m2 per unit area, must be provided. Any joints in boards to be in staggered layers with intermediate insulation in each leaf to be 10 to 60Kg/m3.
Robust Detail E-WT-1, 90mm Insulation
Part E Building Regs. 40 dB Min. Test Range 47-65 dB Mean Performance 55 dB
Party Floors – We achieve the current requirements specified by Part E of the Building Regulations and adherence to Robust Detail E-FT-1 to ensure that site testing is not required. Floor make up should follow our Standard Party Floor Detail PW05 available in our login section of this website.
Robust Detail E-FT-1
Part E Building Regs. Test Range Mean Performance
Airborne 45 dB Min. 47-55 dB 50 dB
Impact 62 dB Min. 46-58 dB 53 dB
What do I receive from Taylor Lane as far as building regulations/ NHBC certification/ Warranties and Engineering are concerned?
House builders are required to get adequate insurance and guarantees on what they are building whether it is through the NHBC or through a company such as Zurich Municipal. Structural calculation, assembly drawings and details are supplied by Taylor Lane for submission to the Local Authority by the client or the client’s representative. N.H.B.C. HB353B Certificate/Engineers Structural Certificates are provided by Taylor Lane. The structural drawings and engineering for building control approval for the structural shell are generally completed by Taylor Lane approximately 2 weeks before the delivery of the frame. The client or client’s Architect makes the main application before work on site begins to get conditional approval or similar by stating that the timber frame structural shell is by specialist manufacturer. The timber frame drawings and engineering are then sent to be added to the application once completed.
If you are deciding to go along the timber frame route you should wait to receive the timber frame company’s soleplate layout drawing before progressing with your foundations. The soleplate layout will have all panel and diagonal dimensions required to set out the foundations including which wall panels will be load bearing / non load bearing. To ensure a successful project it is imperative that the ground worker works to the timber frame company’s soleplate layout and constructs the base within the allowed tolerances. To achieve this a recognised / recommended ground working company should always be used.
FLOATING GROUND FLOOR – Ground floor finish laid when the structure is watertight which generally consists of Vapour barrier / 60mm Polystyrene and 18mm V313 Moisture resistant floor decking (can be laid on top of a concrete base or concrete beam and block floor). (This floor is suitable if the majority of the ground floor is to be carpeted or similar)
POWER FLOAT FLOOR – A finished concrete floor that is layed using a power float machine before the timber frame arrives. The concrete is screeded off flat and allowed to reach initial set before work starts. This method avoids having to lay a screed or a floating floor at a later date. (This floor is suitable for finishes such as tiling or carpeting)
CONCRETE SCREED – An in situ flooring of cement mortar laid to an accurate flat surface by screeding. Screeds are laid on the structural floor (concrete base or concrete beam and block floor) and usually have no reinforcement – in a timber frame situation it would be laid after the structural shell has been erected (generally approx 65mm deep). (This floor is suitable for finishes such as tiling or carpeting)
SUSPENDED TIMBER GROUND FLOOR – Can be supplied by the timber frame manufacturer as pre-cut joists to be constructed by the erection team. The floor would not generally be insulated and decked until the structure is watertight. (This floor is suitable if the majority of the ground floor is to be carpeted or similar)
What requirements will the erectors need as far as scaffolding/ services on site and accommodation are concerned?
The erection company will be in contact after an order is placed to advise on scaffolding requirements. They will generally require scaffolding to be erected around three sides of the building before they arrive on site. The scaffolding company will then return to complete the installation once the erectors are at first floor level. The scaffolding can be erected far enough away from the frame so that it can stay up and be used by the other services such as brick layers and roofers. The erectors will organise themselves and include for in their quoted price any mechanical handling required on site and their own accommodation whilst working on the installation.
No intensive cost exercises have been done on a comparison between a Timber Frame structure and a traditional brick and block structure. On a material only basis timber frame does work out more expensive on paper but there are many other aspects to take into account.
- The speed of construction, whilst taking the bricklayers off the critical path and enabling trades to work both inside and outside the structure at the same time will give a speedier return on your investment.
- Less maintenance call backs than other trades as it is a dry construction.
- A timber frame project can be budgeted much more accurately without the projects costs escalating out of control.
- The timber frame company take on the engineering calculations and the working drawings for the structural shell which takes a lot of pressure off the client.
- The client gets a higher insulated, more accurately manufactured structure in comparison to a brick and block house. All of the above go towards equating the price between timber frame and traditional brick and block.
At the quotation stage all that is required are sketches or similar for a budget quotation and scaleable planning drawings and elevations for a firm quotation. Once an order has been made Taylor Lane will require a full set of 1:50 scale working drawings from the client / client’s architect to adapt to timber frame.
For heavy items such as kitchen cupboards and bathroom fittings rows of timber noggins can be fixed into the timber frame panels at the required height before plaster boarding. It is widely known that the quality and strength of the fixing into timber is far stronger than if you were fixing into a modern day thermal block in traditional construction. Alternatively, certain internal walls that are required to take a lot of fittings could be lined with 18mm plywood or similar. For items such as pictures or shelving either the timber studs could be located or there are a number of modern plaster board fixings specially designed for these situations.