Forspec
FORSPEC FORBUILD 100 Concrete Repair Mortar
- Regular price
- $87.50 AUD
- Sale price
- $87.50 AUD
- Regular price
-
Shipping calculated at checkout.
Prices shown exclusive of GST.
Online stock available
- Water-mixed single-component mortar
- Fibre reinforcement and polymer modification
- Thixotropic placement on walls and soffits
Couldn't load pickup availability
Overview & Features
- 56 MPa compressive strength at 28 days (manufacturer characteristic value)
- Low permeability for repairs in aggressive environments
- Hand or wet-spray application
Application Guide
- 1. Remove weak, damaged or contaminated concrete. Cut repair edges square at least 5 mm deep; do not feather-edge. Mechanically roughen horizontal substrates and remove dust, laitance, grease and standing water.
- 2. Expose corroded reinforcement and clean to bright metal. Allow at least 10 mm mortar behind and over reinforcement. Rectify structural cracks using the specified FORSPEC epoxy repair system; stop active leaks before placing mortar.
- 3. Pre-wet concrete to saturated surface dry, with no free water. Revision 2 specifies ACTFLEX 300 primer. Highly absorbent substrates require two coats: allow the first to dry and place mortar while the second is tacky. Follow current FORSPEC instructions for the actual substrate.
- 4. Where the slurry bonding coat is used, mix 1 part ACTFLEX 300 : 1 part clean water : 3 parts FORBUILD 100 powder. Brush firmly into the substrate, allow 10 minutes, and place mortar while tacky. Renew any slurry that dries.
- 5. For hand application, measure 3.2–3.4 L clean water per 20 kg bag. Add powder to water; mix at 400–600 rpm for 3–4 minutes, rest 1–2 minutes and re-mix briefly. Do not add cement, lime, gypsum or other additives, exceed the water dose or re-temper stiffened mortar. The TDS separately permits up to 3.6 L for spray/pump application; confirm that exception with FORSPEC before use.
- 6. Place within the 60-minute pot life at 25°C and 50% RH, onto the tacky primer/slurry. Compact firmly without voids. Horizontal layers: 3–100 mm, maintaining squared repair edges. For vertical/overhead work follow the application section's 5–40 mm passes to 100 mm total. The technical table also lists a 3 mm minimum: confirm with FORSPEC before specifying thinner vertical/overhead passes.
- 7. Roughen and dampen fully hardened previous layers. Finish as the mortar firms; lightly broom-finish where later adhesives or coatings require a key.
- 8. Protect from rain, frost, sun and rapid drying. In drying conditions mist for at least 1 hour immediately after finishing. Above 30°C and below 50% RH use damp hessian or plastic coverings for the first 24 hours. Maintain curing for at least 48 hours. Do not use curing compounds.
- 9. Allow at least 24 hours before light foot traffic and at least 7 days before FORSPEC coatings, with moisture verified, at 25°C and 50% RH. Extend for adverse conditions and thickness; comply with the selected coating's requirements.
- 10. Clean tools immediately with water; remove hardened material mechanically. Control cement dust and skin/eye contact and read the SDS before use.
Specifications & Standards
- Grey powder; 20 kg bag
- Mixing water: 3.2–3.4 L per bag for hand application
- Pot life: 60 minutes at 25°C and 50% RH
- Initial/final set: 75/120 minutes at 25°C and 50% RH
- Consumption: 1.85 kg/m²/mm; approximately 11 L mixed yield per bag
- Horizontal build: 3–100 mm per layer; cut repair edges at least 5 mm deep, with no feather edging
- Vertical/overhead: use 5–40 mm passes as specified in the application instructions, to 100 mm total
- Application temperature: 5–35°C, ambient and substrate
- Cure for at least 48 hours; no curing compounds
- Coating: minimum 7 days with moisture verified, at 25°C and 50% RH
- Shelf life: 12 months unopened, stored dry
- EN 1504-3 performance data reported by manufacturer; no independent classification certificate supplied
Product Documents
Complete Your System
-
Current product FORSPEC FORBUILD 100 Concrete Repair Mortar $87.50 AUD In stock -
Forspec PROBOND 1100 – High Strength Epoxy Paste
Technical Specifications
Key technical properties of this product. Refer to the Technical Data Sheet for complete installation and performance information.
| Classification | Fibre-reinforced, polymer-modified cementitious structural repair mortar |
|---|---|
| Mixing Ratio | 3.2–3.4 L clean water per 20 kg powder for hand application |
| Coverage | 1.85 kg/m²/mm; approximately 1.1 m² per 20 kg bag at 10 mm |
| Suitable Substrates | Sound, prepared concrete and cleaned steel reinforcement |
| Curing | Minimum 48 hours; water misting/protective coverings only |
| Reinforcement Cover | Minimum 10 mm mortar behind and over cleaned reinforcement |
Need Technical Advice?
Not sure if this product is suitable for your project?
Our technical team provides independent advice on product selection, compatibility and waterproofing systems.
Independent product advice backed by real-world waterproofing experience.
Contact Technical Support
(07) 3667 9878
Monday–Friday
7:00 am – 3:00 pm AEST
Frequently Purchased Together
These popular picks are often added by trade professionals to complete their project kits.