Facade renovation involves removing failed plaster, treating the substrate, and applying a new render system — with or without adding insulation. Fiberglass mesh is the reinforcement layer that prevents the new render from repeating historical cracking failures. It also compensates for movement between old and new materials as the renovation system settles.
Remove all loose, cracked, and hollow plaster back to sound substrate
Treat substrate with anti-efflorescence primer or bonding agent as appropriate
Repair major cracks and voids with compatible repair mortar; allow to cure
Apply a scratch coat of base coat mortar
Embed fiberglass mesh (145–160gr/m²) in wet mortar with minimum 100mm overlaps at joints
Apply diagonal reinforcement patches at all window/door opening corners
Allow to cure; apply second coat to fully cover and embed mesh; allow full cure
Apply compatible primer and finish render
Bridging over micro-cracks in old substrate prevents cracking propagation to new render
Alkaline-resistant mesh survives cement and lime-based mortars without degradation
Flexible mesh conforms to uneven substrates typical of older facades
CE certification accepted by architects and engineers specifying facade renovation
Higher weight mesh (160gr+) for facades with active thermal movement history
Applying new render over hollow or delaminating old plaster — new render will fail regardless of mesh
Using wire mesh from old demolition material — corrodes and stains new plaster from within
Insufficient substrate preparation — mesh cannot compensate for a weak or contaminated base
Skipping the diagonal corner reinforcement — most common cracking location in renovated facades
Rushing cure time between coats — insufficient cure causes surface cracking before weathering begins
Should old wire mesh be removed before re-rendering?
Yes. Old wire mesh almost always carries rust. Even if hidden, rust expansion will crack new plaster within 1–3 years. Full removal is mandatory.
What mesh weight for a renovation project?
145gr/m² is minimum for residential renovation in standard climates. For older buildings, the Balkans mountain climate, or facades with prior movement history, use 160gr/m².
Can fiberglass mesh be used over old paint?
Not directly. Old paint must be removed or mechanically treated (abraded) before applying new mortar. Fiberglass mesh cannot compensate for a delaminating paint layer.
CE-certified fiberglass mesh, self-adhesive tape, and foam products. Direct factory pricing from Ferizaj, Kosovo. Delivery across the Balkans.