MapeWrap Primer 1 is a solvent-free epoxy resin based product made up of two pre-dosed components (that must be mixed together before use).

After mixing, MapeWrap Primer 1 becomes a low viscosity fluid, easy to apply also vertically and very suitable for consolidating and priming substrates.

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• Recommendations
• Application Procedure
• Cleaning
• Technical Data

Recommendations

• Must not be used for contraction joints between fresh and old concrete (use Eporip)
• Must not be used on wet surfaces
• Must not be used on dirty or crumbly surfaces

Application Procedure

Preparing the substrate

The surface on which MapeWrap Primer 1 will be applied must be perfectly clean, dry and mechanically sound. Remove from sound structures traces of form release oils, varnishes or paints and cement laitance by sandblasting.

If the concrete is deteriorated, remove damaged parts by manual or pneumatic bushhammering or by hydro-scarifying.

Clean metal reinforcements and remove any traces of rust. Protect them with Mapefer, a two-component corrosion- inhibiting cement mortar or Mapefer 1K, single component corrosion-inhibiting cement mortar (follow application methods described in the product’s technical data sheet).

Repair the concrete surfaces with products from the Mapegrout line.

Wait at least three weeks before applying MapeWrap Primer 1.

If strengthening must be carried out immediately, repair with Adesilex PG1.

Seal any cracks by injecting Epojet (suitable if the cracks are dry or slightly moist) or with Foamjet T or Foamjet F (suitable if the cracks are wet or with water infiltrations).

Before applying MapeWrap Primer 1, all sharp edges in the concrete elements (for example beams or columns) that need to be wrapped with MapeWrap must be rounded with a demolition hammer or any other suitable means. It is recommended that the bending radius be not less than 2 cm.

Preparing the mix

Mix together the two MapeWrap Primer 1 components. Pour component B into component A and mix with a drill fitted with a stirrer until the resin is completely homogeneous.

The mix ratio: 3 components by weight of A and 1 component by weight of B.

Use the whole amount in the packaging so as not to make dosage errors.

Applying the mix

MapeWrap Primer 1 can be applied over concrete with a roller or a brush.

The impregnation is usually carried out in a single coat. If the substrate is very porous, apply a second coat after the first coat has been completely absorbed.

Once MapeWrap Primer 1 has been prepared, it remains workable for approximately 90 minutes at 23°C. MapeWrap Primer 1 must be applied within its life-cycle, therefore timing is vital in order to use the whole pack within the given time.

Precautions to be observed before application

No special precautions need to be taken at temperatures between +10°C and +30°C. In hot weather do not expose the material to direct sunlight and priming should be carried out during the cooler hours.

During the winter, if applications need to be carried out outdoors at temperatures below +10°C, it is recommended to warm the substrate 24 hours before applying MapeWrap Primer 1, protect from frost, store the product before its use in heated areas.

Cleaning

Due to the strong adhesion of MapeWrap Primer 1 also on metal, it is recommended to wash the working tools with solvents (ethyl alcohol, toluol, etc.) before the product dries.

Technical Data