XERAL COM 11
basement ceiling bonding agent
XERAL COM 11 basement ceiling bonding agent is a factory-produced water repellent dry mineral mortar with extremely high bonding strength for difficult base surfaces. CS IV to DIN EN 998-1; mortar type P III to DIN 18550
Technical product data sheet
- XERAL COM 11 basement ceiling bonding agent is suitable for bonding mineral insulating boards to sound yet low absorptive base surfaces such as high-density concrete or bitumen seals.
- Outstandingly suitable as a bonding agent for ceiling insulating boards.
- Consists of size-graded and dried calcareous or siliceous natural sand, cement and slaked lime
- Contains additives for improved working, bonding and water repellence
|Class||CS IV to DIN EN 998-1|
|Mortar type||P III to DIN 18550 general plastering mortar GP|
|Thermal conductivity λ 10, dry, mat (tabular value to DIN EN 1745)||approx. 0.61 W/(mK) for P=50%
approx. 0.66 W/(mK) for P=90%
|Adhesive tensile strength||> 0.08 N/mm²|
|Compressive strength||approx. 14 N/mm²|
|Water absorption||W0 to DIN EN 998-1|
|Water vapour diffusion resistance (µ)||≤ 25|
|Grain size||< 1.0 mm|
All technical data are characteristic values which have been determined under laboratory conditions on the basis of the applicable test standards. Deviations under practical conditions possible.
- 25 kg/sack
- 42 sacks/pallet
- Water requirement approx. 7 – 8 l/sack
- Approx. 4.5 – 5.5 kg/m² bonding (with 6 mm teeth)
All consumption figures are dependent on the base surface condition and application method. Determine exact quantities with test application on object.
- The base surface must be clean, dry, solid and sound, as well as free of efflorescence and film-forming release agents. The load-bearing capacity of the plastering base must be carefully tested. Where critical surfaces are concerned, carry out a bonding test. Loosely attached residuals of plaster and/or paints are to be removed in any case. Insulating boards with foam skin (mainly XPS boards) are to be roughened all over and be brushed off.
- Clean tools immediately after use.
- Cover or mask vulnerable areas with tape (glass, ceramics, wood or metal etc.) prior to working. DIN EN 13914, DIN 18550 and DIN 18350 as well as German Construction Contract Procedures (VOB) Part C apply for the execution of plastering.
- XERAL COM 11 basement ceiling bonding agent can only be worked manually.
- Mix the contents of the sack with 7 – 8 litres of clean water to a suitable working consistency without lumps using an agitator. After a maturing time of approx. 10 minutes thoroughly stir again.
BONDING OF INSULATING BOARDS:
- The application of bonding mortar is normally made over the whole area of the insulating boards or the base surface using a toothed trowel. Depending on application (e.g. perimeter underneath balustrade) and base surface, partial area bonding is also possible. Immediately after application of bonding agent apply the insulating boards by press butting and float into position pressing firmly onto the base surface. Make certain that positioning is flush and plumb to ensure that a smooth plane façade surface is achieved. Do not get any bonding agent into the butt joints between the boards. Where necessary prop up ceiling insulating boards until the bonding mortar has dried through.
TEMPERATURE AND WEATHER CONDITIONS:
- The freshly applied plaster is to be protected by suitable means from dewatering too quickly in the sun, in the wind and at high temperatures as well as from exposure to driving rain and the action of frost.
- High humidity and low temperatures can significantly prolong the curing period.
- Do not work with component and air temperatures below +5°C or above + 30°C.