Window sills

Window sills
  • ULMA Architectural Solutions window sills are the pieces designed to evacuate rainwater in the window spans.
  • Ideal for any type of construction for being easy to install, as well as for their aesthetics
  • With stainless anchorage to guarantee the optimal intallation, avoiding the corrosion of the piece.



Chip and extract the first brick on each side of the hole where the window sill must be inserted


Generate a support slope using mortar with a very high cement content to form a resistant surface in the area on which the piece will be fitted


Proceed to open the anchors with the pieces on the back, one pin for each side


Apply a layer of elastic adhesive mortar type C2S2 (double glued) to the window sill. Make sure that the adhesive mortar covers and surrounds the anchor


Fit the piece by hammering it, making sure it is level and aligned


Leave a joint of at least 5 mm between the piece and the brick on both sides. Fitting two strips of Porexpan approximately 1 cm thick can acts as a gauge and a joint, since it has a suitable capacity for deformation


Whenever it is necessary to fit more than one piece, place the master next to the piece fitted and mark a 5 mm joint between the pieces


Place the next piece alongside master joint. Hammer, level and align the piece


Clean the joint between the pieces with the master by sliding it outwards, ensuring the joint is perfectly clean across the whole thickness


Proceed to seal the joints with a flexible impermeable element with high adhesion and modulus of elasticity. It is recommended for this element to have good resistance to UV rays to avoid yellowing and cracking. Repeat the operation successively


When quantity is not at odds with quality
When quantity is not at odds with quality

Over 10 km of architectural precast elements in the Célere Perales single-family housing development (Madrid)


Architectural Precast catalogue

Architectural Precast catalogue

Architectural Precast small catalogue

Architectural Precast small catalogue