- Manufactured From MAXIT LWA
- High Insulating Value
- Ultra Lightweight Material
- Low Unit Weight Complies With HSE Guidelines on Manual
Handling
- Reduces Loads on Floors and Structure
- High Fire Resistance
- Very Low Movement Factor
- Manufactured To Comply With BS EN 771-3 And Associated
Test Standards
- Work Face 440mm x 215mm
Composition
Optilyte ultra lightweight units are manufactured from
Maxit ExClay (an expanded
clay lightweight aggregate) and cement. INTERFUSE LIMITED
is one of the
selected manufacturers licensed by Maxit ExClay Ltd, to
produce and market Optilyte
units to their specifications. Maxit ExClay is manufactured
from a special kind of clay
which through heat expansion is transformed into lightweight
porous granules with
numerous cavities, giving Optilyte units their incredible
lightweight properties.
Appearance
Produced in solid form Optilyte units are extremely light,
grey in colour and give an open textured finish. The faces
of the Optilyte unit provide the ideal key for plastering.
Standards
Optilyte units comply with BS EN 771-3 & Associated
Test Standards.
Format and Size
Available in Solid, Cellular and Hollow format.
Face work size 440mm x 215mm.
Tolerances as EN771-3 Table 1 & EN772-16 Category
D1.
Length and height +3 -5mm, width +3 -5mm
Strength
Minimum compressive strength of Optilyte Solid units is
3.6 N/mm2 and Cellular units is
2.9 N/mm2
Solid units can be supplied to 7.3 N/mm2 at a higher density
Physical Properties
Relationship Density / Strength.
Gross dry density - Category II mark material
2.9 N/mm2 Cellular 550 Kg/m3 to special order.
3.6 N/mm2 Solid 650 Kg/m3
7.3 N/mm2 Solid .................. to special order
Moisture Movement
As tested to BS EN772-14 : 2002
Total movement = 0.42mm/m
Water Absorption by Capillarity
Test method EN 772-11 - No performance determined
Durability against freeze thaw
No performance determined - Not to be exposed
Shear Bond Strength
Declared Value 0.15N/mm2 BS EN 998-2 Annex C
Water Vapour Permeability
EN1745:2002 Table A3 - Water Vapour Diffusion coefficients
μ 5/15.
Thermal Conductivity
The “(K) value of Optilyte ultra lightweight units
has been tested by an
independent laboratory and is supported by British Calibration
Service Approval
Test Certificates.
0.19 W/mk at 3% Moisture Content (m/c)
0.21 W/mk at 5% Moisture Content (m/c)
Thermal Resistance
The equivalent resistance of Optilyte units shown in the
table has been calculated in
accordance with the procedure laid down in the CIBSE Guide
A3 1999.
High Insulation
• The combination of Optilyte units and insulation
material achieves 'U’ Values of current regulations
with ease
Lower Shrinkage
• Fewer movement joints
• Good for plaster - no cracking
• Ideal for tiling applications
• Less maintenance
Lower Site Breakage
• Breakages under 1% on site trials
• Assists good site housekeeping
• Good economy
Class 1 Fire Resistance
• Aggregate melting point in excess of
1250oC
ADVANTAGES
Low Density
• Easy to handle
• One hand lift
• Increased productivity
• Reduced deadload
Good Fixability
• Ideal for direct nailing
• Provides easy and true drilling
• Drill and plug at speed
• Excellent for holding fixings securely
• Easily cut using a bolster
• For heavy cantilever loads use
chemical fixing
Excellent Plaster Key
• Open texture providing good key suitable for
tiling
• No bonding agents required
• Ideal for both lightweight and dense plaster
MAXIT ExClay is processed at approx. 1150ºC - melting
point in excess of 1250ºC.
Optilyte units are classifed as non-combustible and classified
- Euroclass A1 EM ISO1182.
Sound Insulation
The sound reduction value of walls constructed of Optilyte
units is based on the mass law approach, 100 - 3150 Hz
frequency range. A single leaf partition wall plastered
both sides using a 100mm Solid unit will give a sound
reduction of approx. 40dB.
Optilyte ultra lightweight units are delivered in crane
off loaded packs from our two
factories at Syston and Gainsborough.
Banding and shrink wrapping available on request subject
to special quotation.
Sitework
It is advisable to store Optilyte units clear of the ground
and to provide weather
protection for the packs and incomplete work. We recommend
that packs be stored
on site no more than two cubes high.
Prices Quoted per 10 units (9.88 per m2).
Quality Control
Interfuse Ltd operate a formalised QA system at both Syston
and Gainsborough plants.
All masonry units are subject to stringent quality control
checks and are tested daily in our own laboratory. A documented
factory production control system is in operation with
regular checks made on raw materials, production and finished
units. A stock control
system is in operation with written procedures for non-conforming
products. All products
are produced to the current European Standards.
Marking
Each pack is marked for traceability of product and unit
clarification as given on the
delivery ticket.
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