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Over time, the roof can become covered with moss and lichen. Regular maintenance based on antifoam product makes it possible to get rid of this plague.

Foaming a roof

Foaming a roof

Why dish out a roof?

The defoaming is a necessary step in the maintenance of a roof, which keeps its cover in good condition several years. Moss, lichen and fungi are "green" pests that colonize the roof and eventually alter the impermeability of the tiles. Terracotta or slate roofs are more sensitive to this phenomenon but unfortunately, no roofing material escapes.
Luckily, defoaming is easy to do.

How to defuse a roof?

The defoaming is obligatory in good weather and in the absence of wind. To defoil a roof, several steps are necessary:

  • Lay the ladder against the facade. The ladder must extend at least one meter.
  • Clean the roof to remove dirt and moss with a brush.
  • Apply the fungicide with a brush, roller or spray, depending on the product chosen.
  • To let do.
  • Rinse with water from top to bottom. If you use a pressure washer, watch out for the spray that could damage the tiles.
  • Apply a mineralizing product, which will prevent the appearance of new foams. Two layers may be needed depending on the product. This step is optional.

The products used are not always good for the health: it is better to be equipped with a mask and gloves during all the duration of the operation.

The defoaming operation is generally renew every 10 yearsunless new foams appear before. If you live in a humid area, where the moss is proliferating, the mineralizing product is practical because it increases the resistance of the tiles to green colonizers.

It is recommended to respect the doses indicated on the cans of the products. The product must be of good quality and compatible with your roof.

Video Instruction: Sprayed Polyurethane Foam Roofing