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SNOWHITE - SWMX

Description Tech info. Images
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Thermal insulation of tiled roofs, metal roofs and hollow external walls

Catalog number: SWMX

Snowhite – SWMX is an insulation system consisting of a multi-layer sheet combining a reflexive radiation barrier with an insulation layer of, pure and flexible polyester fibers.

The radiation barrier is made of a reinforced aluminum foil with a low emissivity level, approximately 3%. The reflective side (the shiny one) of the barrier faces outside.

Snowhite – SWMX is used for thermal insulation of tiled roofs, low-weight roofs, hollow external walls in residence, industrial, agriculture buildings and for insulating air-condition ducts.

Product's Purpose

Snowhite – SWMX is used for thermal insulation of tiled roofs, low-weight roofs, hollow external walls in residence, industrial, agriculture buildings and for insulating air-condition ducts.

Technical Specification

SWMX800

SWMX500

SWMX300

Property

Polyester weight (gr./m2):

800

500

300

Thickness (mm):

100

75

45

R – Thermal resistance -  according to ASHRAE (m2k/w)

4.15

3.48

3.08

Heat conductivity) –

w/mk

0.0497

0.056

0.048

NRC (as per  ASTM-C177):

0.70

0.45

0.35

Fire Class according to I.S. 755:

  1. B2.2.2
  2. B2.2.2
  3. B2.2.2
   

Using Manner

General:

Snowhite – SWMX insulation cutting method: by means of simple (long) cloth scissors.

The insulation is attached to the beams by means of a pins-gun. The height of the pins' legs: 10-12 mm.

To cover overlaps (usually unnecessary) use dedicated aluminum masking tape. Apply masking tape in the same manner at slopes' junctions (corners) for attachments that are not to beams.

The Snowhite – SWMX is suitable for insulating tile roofs subject to I.S. 921.

Installation under tiles on an existing roof:

Stretching the Snowhite – SWM perpendicularly to the roof's slanted beams.  

  1. Stretch the Snowhite – SWM horizontally, perpendicular to the beams and attach by means of a pins-gun to beams' bottom.
  2. It is recommended to create 5 cm. overlaps between every two sheets, with the lower insulation overlapping the higher one from beneath.

 

Using Manner

Installation under the tiles of an attic's roof:

In a tiled roof to be fitted with a gypsum ceiling under the tiles. Stretching the Snowhite – SWMX along the span between the beams (the slanted ones).

  1. Verify that the insulator's width fits the distance between two adjacent beams' centers + 5-10 cm. spare.
  2. Measure the necessary length (the beams' length from the roof's top to bottom) and cut the insulator to the desired size.
  3. Attach the insulator's edges to the beams' sides leaving maximum air clearance between the tiles' wooden supports and the insulator. Attachment is attained by means of a pins-gun at distances of 30 to 40 cm. in between.

Installing Snowhite – SWMX at a new roof, before laying down tiles:

Stretching the Snowhite – SWMX perpendicularly to the roof beams (the slanted ones) and attaching the sheet's edges by means of a pins-gun over the beams creating overlaps.

  1. Stretch the Snowhite – SWM horizontally, perpendicular to the beams and attach by means of a pins-gun before laying down the tiles' wooden longitudinals.
  2. Create overlaps along the meeting lines of two adjacent sheets so that the higher sheet overlaps the lower one from above.

The Snowhite – SWM may be extended so that it is stretched between the beams but it is recommended to stretch it creating a 4-8 cm. depression between the beams, to increase the ventilation clearance underneath the tiles. The depressions need be measured to verify their uniformity before attaching with the pins.   

Fitting Snowhite – SWM on a concrete roof:

The Snowhite – SWM may be extended over a concrete roof directly. To improve the insulating performance it is recommendable to cut 10x10 cm. Snowhite – SWM squares, gluing them onto the ceiling at distances of 60 cm. in each direction with contact glue and laying down Snowhite – SWM freely on them.

 

Packaging

 

Snowhite – SWM is marketed in rolls in the following widths:

40, 60, 80, 120

Width:

 

Safety Instructions

Avoid any contact between Snowhite – SWM (or any other reflective insulator) and exposed electric cables, electric boxes or any non-insulated electric element (aluminum foil is an electrical conductor!).

Verify the stability and safety of the roof's beams before taking any action.

In a gypsum ceiling it is recommended to lay down a plate resting on 2 adjacent beams and standing on it.

Snowhite – SWM is not to be attached to a chimney. Verify a distance of at least 12 cm.

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Talk to us

Bitum Ltd - Haifa
+972-4-8416217
1-800-30-20-60
Central Branch
+972-3-6227123
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