Window Grills in Nairobi: Security That Does Not Look Like a Cage

Grills are the most common metalwork in Kenya, and the most casually specified

Almost every Nairobi home has them and very few were designed. Bar spacing is copied from the neighbour, fixings go into plaster rather than structure, and nobody asks how anyone gets out in a fire.

Spacing is the security

A grill only resists entry if the gaps are small enough that a person cannot pass and a bar cannot be levered apart. Wide-spaced decorative bars in flat section look substantial and spread under a jack.

We use solid square or round bar at close centres with welded intersections, not bolted, and we frame the perimeter so the grill cannot be pushed as a panel. The difference in cost between a grill that works and one that looks like it works is smaller than most people expect.

Fixings matter more than the grill

A perfectly made grill screwed into plaster comes out in under a minute. Fixings go into the structural reveal with chemical anchors, and on a stone opening (common across Karen, Muthaiga and Lavington) that means the right drill and patience rather than a bigger hammer.

Fire escape

At least one opening per floor should open from the inside. This is the single most neglected thing in Kenyan domestic metalwork, and it is not a theoretical concern, a fully grilled house with a locked gate is a genuine trap.

We fit an internally releasable escape grill on a specified opening, with the release where an occupant can reach it and an intruder cannot. If a client declines it, we put that in writing.

Finish

Painted mild steel is cheapest and rusts at the welds within two rainy seasons. Hot-dip galvanising followed by powder coating costs meaningfully more and lasts many times longer.

On anything exposed to weather we recommend galvanising, and on any coastal-facing or heavily-exposed elevation we insist on it or decline the job.