Villa Maintenance Checklist Before Rain Season (October–February): 15 Points From Roof to Drainage

Short answer: Rain season along Jeddah and the coastal belt runs from October to February, and its storms tend to be short, sudden, and heavy — enough to expose any deferred roof or drainage fault within an hour. The checklist below covers 15 points across four areas: roof waterproofing, rainwater drainage, floor drains, and outdoor lighting. Checking all of them takes half a day and prevents a far costlier repair after the first storm.

#	Item	Area
1	Check the roof waterproofing membrane for cracks or blistering, especially at parapet edges	Waterproofing
2	Confirm the roof slopes toward the drains (no standing water after a hose test)	Waterproofing
3	Clean the AC condensate drain outlets on the roof	Waterproofing
4	Check the rooftop water tank cover and overflow outlet	Waterproofing
5	Inspect rainwater downspout joints from roof to ground	Drainage
6	Confirm the yard grade slopes away from the building foundation	Drainage
7	Clear inspection chambers and main drainage joints of accumulated sand	Drainage
8	Check exposed drain fittings for UV-induced cracking	Drainage
9	Clean the trap under bathroom and kitchen floor drains of hair and debris	Floor drains
10	Check balcony and open-roof floor drains	Floor drains
11	Confirm the garage floor drain is not buried under summer dust	Floor drains
12	Verify garden and façade fixtures carry an IP65+ rating	Outdoor lighting
13	Check the cable gland seal on outdoor fixture housings	Outdoor lighting
14	Test the photocell sensor or timer after summer inactivity	Outdoor lighting
15	Test the RCD breaker for the outdoor lighting circuit	Outdoor lighting

Why Are the Roof and Waterproofing the First Line of Defense?

Roof waterproofing is what keeps water out of the ceiling and interior walls, and it's the most neglected item precisely because damage doesn't show until the first heavy rain. Almadah's catalogue carries hundreds of products under Waterproofing (rolls & liquids), VAT-inclusive prices ranging from SAR 0.86 to SAR 4,755.26 with a SAR 78.49 median (as of 20/09/2026), led by Grado, Isomax, and Dadco. For roofs and foundations, bituminous membrane rolls are the standard choice for resisting sustained moisture, such as this one:

A simple field test: run a hose on the roof for ten minutes and watch whether water actually reaches the drain or pools somewhere — standing water is more dangerous than a visible crack because it soaks the membrane slowly all season.

How Does Drainage Work From the Downspout to the Main Line?

One cracked joint along a downspout run means damp on an interior wall, not just the façade — which is why checking top-down matters, not just checking what's visible from the ground. Drainage fittings count hundreds of products priced from SAR 0.37 to SAR 701.50 with a SAR 12.54 median, led by Abelco and NIBROPLAST:

In the yard, confirm the grade slopes away from the foundation, not toward it — a common mistake in late tiling work re-grades the surface toward the wall by accident, pooling water right at the base instead of away from it.

Why Are Floor Drains the First Thing to Overflow?

The floor drain is the simplest item on this list and the most neglected, since it sits outside daily use — especially on balconies, roofs, and garages. The catalogue carries hundreds of products under Floor drains, from SAR 3.45 to SAR 910.80 with a SAR 55.20 median, led by Tieto, SAY, and Al-Zamil:

Lift each drain grate and clean the trap underneath of hair and debris — a partially clogged trap, not a weak drain, is the most common cause of a flooded bathroom or balcony floor during the first heavy rain.

Why Should You Check Outdoor Lighting Before the Rain, Not After?

Garden and façade fixtures are the one item on this list where water and electricity meet directly, which is why they need a closer check than the rest. Outdoor lighting and floodlights count hundreds of products, from SAR 4.60 to SAR 1,631.63 with a SAR 60.31 median, led by Hyundai and PHILIPS:

Check three things in order before the season starts: the IP65+ rating stamped on the fixture body itself, then the cable gland seal — the actual leak point far more often than the fixture housing — then the test button on the RCD breaker feeding the outdoor lighting circuit, which trips power automatically on contact with pooled water, in line with what the Saudi electrical code requires for circuits exposed to moisture.

Frequently Asked Questions

When should I start checking the villa before winter?

At least two weeks before October, so there's time to order any missing part — a drain fitting, a floor drain, a fixture — before the first real rain.

Is a hose test on the roof enough to catch a waterproofing leak?

It catches most cases, but hairline cracks may only show up under sustained real rain. For an older roof (8+ years), get a specialist inspection rather than relying on the hose test alone.

Why does drainage overflow with no visible blockage?

The usual cause is a partial clog in the trap under the drain, not the drain grate itself, or a slight grading error that slows drainage instead of stopping it outright.

Related Links

• Almadah Field Tips: Seasonal Maintenance and Climate-Based Material Selection — hub page
• Waterproofing (rolls & liquids) — hundreds of products
• Drainage fittings — hundreds of products
• Floor drains — hundreds of products
• Outdoor lighting and floodlights — hundreds of products