FREQUENTLY ASKED QUESTIONS - KLH UK LTD

1 F RE QU E NT L Y A S KE D QU E S TIO N SFREQUENTLY ASKED KLH Cross Laminated Timber Panels What are cross laminated timber panels? How are the boards glued together? What can KLH panels be used for? What is the level of waste in the production of KLH panels? Are KLH structures like timber frame structures? Can KLH panels be left exposed on the interior of a building? Can KLH panels be cut to the dimensions of architectural drawings? What are the cost savings from using KLH panels? How quickly can other services begin work on the structure once KLH panels have been erected? Manufacturing and Design What capacity does your factory have for manufacturing panels? How do you manufacture the cross-laminated timber panels? What does timber engineering cover in your quote? Is the routing of KLH panels included in the quote? Is sound insulation included in your quote? Is fire protection included in your quote? Technical Characteristics and Approvals What are the technical characteristics of KLH timber panels?

2 What are the achievable u-values when building with KLH timber panels? What airtightness level is achievable using KLH cross- laminated timber panels? How does your product respond to concerns about lack of thermal mass in lightweight construction and potential overheating of dwellings? Are KLH external timber walls insulated? What are the technical characteristics of KLH timber panels? Transportation, Delivery and On-site Management What size of panels can be transported to the UK? How do you transport the timber panels? How are the panel deliveries scheduled? Can KLH UK deliver panels to any site? Is the KLH erection process integrated into the overall cosntruction programme? Is there a KLH site manager on-site during the erection of the timber structure? Do KLH organise the cranes on-site and is it included in the quotation? Is the cost of scaffolding included in the quotation? Is a method statement written for the on-site erection process?

3 Can the building be erected in shorter timescales, if required? After installation is the roof water tight? What does the method statement contain risk assessment? Do KLH UK undertake post assembly inspections? Contact UsCO NTE NT PAG ECan KLH panels be cut to the dimensions of architectural drawings?The panels are cut and processed in the KLH Massivholz GmbH factories, in Austria & Sweden, using state-of-the-art CNC technologies, resulting in excellent dimensional stability, both in overall panel size and for structural openings. Please see the 'CNC Processing' document for further are the cost savings from using KLH panels? There are a number of cost savings from using KLH panels, including: Less weight in the overall structure results in a more economic design of the substructure/foundations (less concrete) The load distribution of the panelised structure can reduce the thickness of the transfer slab (less concrete) Prelims can be reduced due to the shortened construction programme Programming can be enhanced by, for example, pre- ordering windows the high degree of accuracy afforded by the CNC cutting process ensures that exact structural openings will be delivered to KLH building offers a solid timber superstructure which has no interfaces with other trades or materials during the construction process; resulting in a simplified, 'low-risk', process which contributes to the delivery of a high-performance quickly can other services begin work on the structure once KLH panels have been erected?

4 The clean, dry and relatively quiet erection process that KLH UK use ensures that no drying time is required on mulit-storey schemes following trades can be working immediately on the preceding floors if required. Based on our experience it is clear that there are time saving opportunities for the following trades*: Services approximately 30-50 percent quicker Dry liners approx. 20-30 percent quicker Window & door installers approx. 20-30 percent quicker Insulation installers approx. 20-30 percent quicker Cladding installers approx. 20-30 percent quicker.* Conservative rates based on anecdotal evidence provided by main KLH CROSS LAMINATED TIMBER PANELSWhat are cross laminated timber panels?Cross-laminated timber panels are produced from kiln dried spruce/fir boards which are stacked at right angles and glued together over their entire surface. Depending onthe purpose and static requirement, the plates are available in 3, 5, 7 or more board are the boards glued together?

5 Gluing is carried out with PUR adhesive which is completely solvent and formaldehyde free and tested in accordance with DIN 68141 and other strict criteria by MPA Stuttgart andapproved for the production of load-bearing timber construction elements and special construction methods in accordance with DIN 1052 and EN 301. Crosswise gluing at highpressure reduces the wood's expansion and shrinkage to an insignificant can KLH panels be used for?KLH solid timber panels can be used as large wall, floor and roof elements. What is the level of waste in the production of KLH panels?The production process produces zero-waste as all off-cuts, wood shavings and sawdust are manufactured into biomass pellets, and used to generate heat and power in the KLH Massivholz GmbH factories, and the excess is sold to local CHP KLH structures like timber frame structures?No, KLH panels are solid cross-laminated timber building elements - industrially prefabricated panels which have a structural performance more akin to precast concrete KLH panels be left exposed on the interior of a building?

6 Yes, KLH panels are available in 3 visual qualities: non visual quality industrial visual quality domestic qualityDomestic quality panels can be left exposed within the interior of a building, but should be treated with some kind of surface treatment (wax, oil) or spread of flame treatment (dependent on building regulations). Please see 'Surface Quality' document for further information.* Panels may require further sanding prior to RE QU E NT L Y A S KE D QU E S TIO N MANUFACTURE AND DESIGNWhat capacity does your factory have for manufacturing panels?The KLH has factory capacity exceeding 750,000m at two plants in Austria. How do you manufacture the cross-laminated timber panels?KLH were the first manufacturer to introduce a high pressure physical press into the manufacturing process of cross laminated timber, which allows us to use polyurethane adhesive in the boards. The gluing takes place using solvent-free and formaldehyde-free PUR adhesive from Purbond (HB 110, HB 530) - this adhesive is tested according to DIN 68141 and other strict criteria of the MPA Baden W rttemberg, Otto Graf Institute Stuttgart and is recognised for the production of internal and external supporting timber components and special construction methods in accordance with DIN 1052 and EN 301.

7 The glue is applied automatically over the whole surface - the percentage of adhesive is and glue seam. A very high-quality level of adhesion is achieved as a result of the physical pressing power of approx. 50 process has been patented by KLH. What does timber engineering cover in your quote?KLH UK's timber engineering services includes the member design and the connection design for the structural shell suitable for being submitted to building the routing of KLH panels included in the quote?The standard routing of KLH panels is included in our quotations, this includes:per panel: up to 2 openings (door/window) 5 holes to diameter 60mm 2 service runs Anything outside of this is an additional RE QU E NT L Y A S KE D QU E S TIO N SIs acoustic performance considered in your quote?Acoustic insulation is not included in our quotes (only structural solution). Sound insulation should be covered by additional build ups - 2 sides of a panel cannot be left exposed, but in some situations one side can be left fire performance considered in your quote?

8 No fire protection is not included in our quote, only structural solutions. Fire performance can be increased in the structural panel by increasing thickness if it is exposed, otherwise it should be covered by additional build sound insulation and fire protection can be part of the structural wall or additional build up (or even part/part) this should be subject to further are the panels routed and how can I ensure that they are to my drawing specifications? KLH Massivholz GmbH have qualified and highly skilled operatives to oversee the cutting and processing of the panels to the exact requirements of the design, using state-of-the-art CNC technologies. This results in excellent dimensional stability, both in overall panel size and for structural openings. All the required design work for a project is undertaken in KLH UK's London office, as is the cutting data, by our in-house design team. They create fabrication drawings taken from the original architect's drawings incorporating the cross laminated timber panels, openings, joints and connections and transfer them to the factory in Austria or Sweden for cutting and processing on the state of the art CNC management procedures include both technical and quality reviews to ensure that the panels that are produced are to the exact requirements of the design before they leave the factory and are transported directly to the construction site.

9 Please see 'Design Process' is the lead in time for incorporating KLH panels into a building?The lead in time for KLH UK is 12 weeks: 6 weeks for producing and commenting on drawings (2 no. revisions) 6 weeks for production of panels, delivery to site and organisation of on-site activities ( labour and crane).The lead in time begins once KLH UK have received the architect's final set of drawings and the engineer's calculations. Please see 'Design Process' document for further KLH UK undertake the structural engineering for the project, please allow for an additional 3 - -4 TECHNICAL CHARACTERISTICS AND APPROVALSWhat are the technical characteristics of KLH timber panels?The technical characteristics of KLH cross laminated timber panels are:Board Formats max. length: * m - max. width: mAt KLH UK we try to limit the maximum length to in the UK because it is the most economical way of transporting the Thickness Standard board thicknesses are between 57 - 300mm, but panels can be created up to 500mm if required.

10 The board layers can be between 3 - 9 layers, standard layers are:3 layers 60, 63, 78, 90, 94, 98, 102, 108 mm5 layers 95, 101, 117, 125, 128, 146, 158, 162, 170, 182 mm7 layers 202, 226, 256 mmDimensional Stability parallel to board : negligible movementnormal to board : mm/m per % moisture outsidestandard 12% +/-2 Moisture 12% +/-2 kiln driedFire Protection / Charring mm/min. - if several layers burn mm/min. - if only the cover layer burns offF RE QU E NT L Y A S KE D QU E S TIO N SAirtightness Number of air changes up to passive house standard- depending on the structure of the boards down @ 50pa (dependent on structural openings etc.)Thermal Performance value to W/mKSpecific heat capacity kJ/kgK bulk density 5kN/m3 Further details on the technical characteristics of KLH's cross laminated timber panels can be found in the BRE Durability Report, which is available on airtightness level is achievable using KLH cross-laminated timber panels?