Key Properties
QUINN-therm
- does not readily absorb water, making it suitable for use in damp environments;
- is light, robust and easy to handle; it may be worked using a saw or sharp knife;
- is durable and will perform for the service life of the building.
Meeting Regulations
| Required thicknesses of QUINN-therm QW for different wall constructions (mm) | ||||||
|---|---|---|---|---|---|---|
| Required U-value (W/m2K) | Thickness of QUINN-therm QW (mm) | |||||
| 0.37 | 35 | 40 | 40 | 25 | ||
| 0.35 | 40 | 40 | 45 | 25 | ||
| 0.30 | 50 | 50 | 55 | 35 | ||
| 0.27 | 60 | 60 | 60 | 40 | ||
| 0.25 | 65 | 65 | 70 | 50 | ||
| Masonry | 215mm | 500mm | 215mm | 215mm | ||
| Brick | Natural stone | Dense block | Quinn Lite (B5) | |||
Results based upon wall construction of:
masonry (see table), 15mm plaster, QUINN-therm QW, 25mm cavity, 12.5mm plasterboard.
Calculations performed to BS EN ISO 6946:1997, taking account of repeating thermal bridges.
Design Notes
- QUINN-therm QW shown fixed by battens. With uneven walls QUINN-therm QW should be fixed to battens packed true.
- the battens and metalised facing of the QUINN-therm QW boards form a low emissivity cavity; improving the thermal performance of the wall.
- QUINN-therm QW board edges taped with metalised tape to form VCL.
- QUINN-therm QW boards supplied in 2.4m lengths to match storey height and minimise cutting.
Introduction
QUINN-therm QW (Quinn Wall) is a PIR (polyisocyanurate) insulation board intended for insulating masonry walls from the inside of the building.
QUINN-therm consists of a core of PIR foam bonded on both faces to composite aluminium facings; the gas filled cells give QUINN-therm its high thermal performance and strength.
The thermal performance of existing masonry walls may be improved by fitting insulation to the inner face of the wall and then drylining over the insulation; a solution which is also suitable for new build projects. Because the insulation and finish will reduce the usable volume of the room it is important to select an insulant which will give maximum benefit for the selected thickness.
The low thermal conductivity of QUINN-therm QW makes it easy to improve insulation levels without losing too much space to insulation. The aluminium laminate facing on the boards acts as a vapour control layer, reducing the risk of harmful condensation forming within the existing structure.
Installation Guidance
- Prepare the wall surface: ensure it is true; remove existing skirting, picture rails and projecting window boards; remove any wall coverings with a high vapour resistance (e.g. vinyl wallpaper or gloss paint).
- Cut QUINN-therm QW boards to size - ideally to ceiling height.
- Fix timber battens horizontally to the top, centre and bottom of the boards.
- Seal board joints with metalised tape.
- Fix vertical battens and install plasterboard.
Notes
- Line window reveals with 25mm thick QUINN-therm QW board to avoid thermal bridging.
- To avoid cold spots and thermal bridging between storeys, insulate the perimeter of the floor structure with QUINN-therm QW (see diagram of wall/ceiling junction).
- Fix additional battens to support heavy horizontal items.
Handling & Storage
QUINN-therm QW boards are supplied in shrink-wrapped packs. Store boards under cover and out of direct sunlight, keeping boards flat.
When handling QUINN-therm QW do not knock corners and edges. Cut QUINN-therm QW with a fine tooth saw or trimming knife.
| Product Data | ||
|---|---|---|
| Properties | Value | QUINN-therm QW |
| Board width x length | mm | 1200 x 2400** |
| Board thickness | mm | 20 - 200 |
| Board density | kg/m3 | 26 - 32 |
| Area per board | m2 | 2.88 |
| Edge profiles available | Butt edged | |
| Performance Data | ||
| Properties | Value | QUINN-therm QW |
| Thermal conductivity* | W/mK | 0.022 - 0.023 |
| Water vapour resistivity | MNs/gm | ~ 400 |
| Compressive strength | kPa | >120 |
* quoted in accordance with BS EN 13165:2001 ‘Thermal insulation for Buildings - factory made polyurethane foam products’.
** other sizes may be available upon request.
