WALL STRUCTURE

Customisable Wall Panel Systems

All timber frame wall panel systems can be customised to the clients specification and tailored to suit the insulation requirements set out in your preliminary BER (ROI).

Our team offer a wealth of knowledge and in-depth understanding of u-values and the requirements set out in both Part L and nZEB (Near Zero Energy Building).

Our standard insulation package achieves an impressive u-value of 0.14, while our upgraded package offers a Passive Standard u-value of 0.11!

External Walls

Our external walls are made up of load bearing 150mm x 44mm quality VAC pressure treated timber studs with DPC (Damp Proof Course) fitted to all ground floor walls. In comparison, most other timber frame manufacturers use 140 x 38mm. We also have the option of a 225 x 44mm stud where an extremely low u-value is required.

To suit either wall structure, we supply and fit a 150 x 44mm (or 225 x 44m) VAC pressure treated soleplate.

All studs are fitted with noggins at 400mm centres to ensure maximum strength and load bearance. This is also the most appropriate spacing for the attachment of plasterboard.

9mm OSB3 Smart Ply is then fitted to the exterior of the studs (11mm option also available), followed by a quality breathable membrane.

Each wall panel is precision engineered in a dry, quality controlled environment.

timber frame houses in ireland

Internal Walls

Our internal walls are made up of 100 x 44mm studwork - most others use 89mm x 38mm. We also offer a 150 x 44mm stud.

Double noggins are applied to all internal load bearing walls and fitted with 9mm OBS3 Smart Ply where required.

We also supply and fit Knauf Acoustic Earthwool Roll insulation to your internal walls - available in 100 or 150mm thickness to suit your chosen internal wall studs (100 x 44mm or 150 x 44mm). This adds excellent acoustic performance while also improving efficiency and heating/cooling costs. It also offers A1 rated fire resistance.

Service Cavity - Factory Fitted!

Our pre-insulated airtight panels are delivered to site with a factory fitted service cavity.

This means that your electricians and plumbers can get to work straight away - even before the block work or cladding!

Our 50 x 35mm service battens are laid on top of factory fitted PIR rigid insulation boards, air tightness membrane and tapes - all working to achieve a Passive Standard u-value.

service cavity timber frame house

FLOOR STRUCTURE

We supply and install 225 x 44mm VAC pressure treated solid floor joists at 400mm centres as standard.

We also supply and install metal webbed posi joists which are suitable for concrete screed and underfloor heating pipes at first floor level.

18mm WPB (Water & Boil Proof) External Grade ply is then securely nailed and glued on top of the joists. This ensures added strength under foot of the passing trades and also durability should any rainwater enter the build prior to felting and battening the roof.

Screed at First Floor Level

It is a common misconception that concrete screed cannot be laid at first floor level in a timber frame house. This is not the case – screed floors have been laid in many of our timber frame houses for the purpose of underfloor heating.

Aslong as the intention to lay screed is mentioned in advance, it can be accommodated without a problem. We can design a posi joist system to withstand the weight of the screed.

In fact, the installation of metal webbed posi joists rather than traditional solid floor joists is becoming common practice regardless of the intention to lay screed. Posi joists are much stronger underfoot and offer excellent sound absorption.

timber frame house floor screed

What are Posi Joists?

Metal webbed posi joists are manufactured using top and bottom cords of C16 stress graded timber which are connected by metal web plates to form strong girders which cater for longer room spans. The open webbed design allows easy access for trades such as electricians and plumbers to run their service ducts. For example, if going with a Mechanical Heat Recovery Ventilation system (MHRV), this can all be run within your joists and timber frame structure. Site installation is also significantly reduced as the webbed joists are much lighter and made to measure.

The construction of these joists significantly adds to the strength of the floor. Combined with our glued and nailed WPB external grade ply, these joists can most definitely accommodate the weight load of a concrete floor.

Metal Webbed Posi Joists

ROOF STRUCTURE

We supply and erect all types of roofs to include standard trusses, attic trusses and cut roof rafters suitable for vaulted ceilings.

We use 225 x 44mm C16 graded and CE stamped rafters on all cut roofs with 150 x 44mm collar ties where required.

We also cut openings for your roof lights and supply and install gable ladders, valley boards, sub-fascia boards, bracing and ties. All infill timber and fixings are also included.

Cut Roof Rafters

A traditional cut roof involves cutting timber to suit and building the roof up using rafters, ridge boards, roofing joists and purlins. Prior to engineered roof trusses, all homes were built with traditional cut roof rafters. Today, cut roofs are typically only used where required such as in a vaulted ceiling area.

Steel (Vaulted Ceilings)

Vaulted or ‘cathedral’ ceilings are increasingly popular in modern, open plan designs. We supply and install any steel require to include steel purlins, A-frames and RSJ beams. All steel is manufactured by an engineer to the highest certified standards.

Standard Roof Trusses

As roof trusses are produced using automated machinery, they are typically a lower cost alternative for modern new builds and developments than using traditional cut roof rafters. However, they are not always suitable depending on your roof section.

Attic Trusses

An attic truss, also known as a ‘Room in Roof’ (RiR), is essentially a roof truss with an open section accommodating a living space. The structural roof and floor are provided in the same component.

Flat Roof Sections

We use 225 x 44mm thick timber joists on all flat roof sections with noggins spaced at 400mm centres for added strength. Although more than suffice, our flat roof structure can be further tailored to suit specifications outlined in your engineer's report.

ROOF COVERING

As an extra to our timber frame and roof structure, we also supply and install a quality felt membrane along with counter battens as standard. We can then lay your chosen slate or tiles, valleys, vents etc. to complete your finished roof. We also supply and install lead or aluminium valleys, along with aluminium options for your dry verge system, trims and ridges. This includes Quinn tiles (others available) and a variety of slates to include Berona, Berona Xxtra, Berona Structured, Tegral Supercem, Tegral Thrutone Endurance, Tegral Endurance Textured and SVK.

Why Do We Counter Batten the Roof?

Technically, its actually called 'Counter Batten, Batten'.

Counter battening a roof involves placing two layers of battens over each other in order to further space the felt from the roof covering (tile/slate).

The purpose applying two layers of battens is to allow rainwater to pass more freely and quickly off your tiles or slate and away from your roof. It ensures a clear path for rainwater to run – eliminating the chance of water pooling and seeping down into and through your roof.

This method also allows for more insulation within your roof rafters or trusses as a minimum of a 50mm cavity is required in all roof spaces.

We 'Counter Batten, Batten' all roofs as standard using 2 layers of 25 x 50mm treated roof battens (50 x 50mm) and a quality breathable membrane such as Fakro Eurotop or a Tyvek reflective membrane - whichever suits you best!

timber frame roof counter batten

Quote Back within 48 Hours!

Would you like a free quote for your timber frame home? Simply email your plans to info@timberframeireland.com and one of our team will get back to you within 48 hours!

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