Solar Roof Ventilator for Shophouses
Your top floor heats up by midday. Staff move their desks. Stock gets warm. The aircon runs from morning until closing and still loses.
The heat often starts above the ceiling. Sun bakes the roof, and the trapped air in the roof space keeps warming your unit all day and into the evening.
NexFix SG installs solar roof ventilators that pull that hot air out of the roof space. The fan runs on sunlight, so it adds nothing to your electricity bill. We inspect your roof first, because a fan alone does not fix a hot shophouse. The airflow path does.
Why Shophouse Top Floors Stay Hot
Shophouses are narrow and deep, and neighbours share walls on both sides. Cross breeze has nowhere to go. Many have a pitched roof with clay tiles or zinc sheets over a low, closed roof space.
- The roof space has few vents, so hot air stays trapped.
- Past renovations blocked old eave gaps or air paths.
- The rear air well is covered, so hot air cannot rise out.
The ceiling then radiates heat into your unit long after the sun goes down.
What a Solar Roof Ventilator Does
A solar roof ventilator is an exhaust fan with a small solar panel. Sunlight powers the fan. The fan pushes hot air out of the roof space, and cooler outside air flows in through intake points to replace it.
The panel gets the most sun when the roof is hottest, so airflow rises with the heat. Many units add a thermostat that starts the fan only when the roof space reaches a set temperature.
You may also see it called a solar exhaust fan for home use or a solar attic fan. On a shophouse, the job is the same. Remove heat before it reaches your ceiling.
What It Cannot Do
We tell every customer this before quoting.
- It will not cool a room by itself. Your aircon still does that work.
- It performs poorly when no fresh air can enter the roof space.
- It slows under heavy cloud, and it slows late in the day when sunlight weakens.
- It can pull cooled air out of your unit if the ceiling has gaps and the roof has no proper intake.
Roof space heat is a real problem, but the cure depends on airflow design. That is why we inspect first and quote second.
How We Install a Solar Roof Ventilator
We check the roof type, rafters, ceiling void height, existing vents, and sun exposure for the panel.
We pick the fan position and mark where fresh air will enter. If intake is weak, we add intake vents before we fit the fan.
We look for open gaps, trap doors, and pipe openings between the roof space and your unit. We seal the ones that would let cooled air escape upward.
We cut the opening and fit flashing that matches your tile or sheet profile.
We set the panel toward the best sun and connect the fan and thermostat. No mains wiring is needed for solar only models.
We seal every joint, then confirm the fan starts in sunlight and moves air out of the roof space.
Fan blades can spin the moment the panel sees sun, so our team covers the panel during fitting.
Conservation Shophouses and Landlord Approval
Many shophouses in Singapore sit in conservation areas, and URA requires prior approval for additions and alterations to conserved buildings. Working without approval is an offence under the Planning Act. Pitched roofs and roof appearance are tightly guided.
Check with your qualified person, your architect, or URA before you order. We give you the fan size, position, panel position, and photos of similar work to support your application.
If you are a tenant, get your landlord's written consent before anyone touches the roof.
What Affects Your Price
Your quote depends on these factors.
- Number of fans your roof space needs
- Roof material and pitch
- Access to the roof and ceiling void
- Whether we add intake vents or seal ceiling gaps
- Any roof repair needed first
[Insert starting price or typical range for NexFix SG.] You get a written quote with fan model, quantity, and scope after the site check. No surprise charges.
Who Should Book
Book a site check if you answer yes to most of these.
- Your top floor feels far hotter than the floors below.
- Your roof gets direct sun for several hours.
- You have a roof space above the ceiling.
- You pay high aircon bills on the top floor.
Your roof is shaded by taller buildings all day? Tell us. We will check whether a solar panel gets enough light or whether another solution suits you better.
Why Shophouse Owners Choose NexFix SG
We have worked on Singapore roofs for 15 years. We know how tiles, zinc sheets, and older timber behave under our sun and heavy rain, so we plan the cut, the flashing, and the airflow before we pick up a tool.
Our team has finished 420 projects across Singapore. You get an installer who has seen your roof problem before and knows what goes wrong when work is rushed.
The biggest risk with any roof opening is a leak, and Singapore rain tests every seal. We back our installation with a written workmanship warranty of [12 months, confirm your period]. It covers leaks at the fan opening and flashing that come from our work. If water shows up, we return, find the cause, and fix it at no charge.
The fan, motor, and solar panel carry the manufacturer's warranty, and we state the exact period and model in your written quote. We handle the claim for you, so you do not chase the brand. Warranty does not cover storm damage, work by other contractors on the same roof, or changes made after handover. We list these exclusions in the quote so nothing surprises you later.
Your quote names the fan model, the number of fans, the intake work, any ceiling sealing, and the price. We also tell you in simple words what the fan will do for your shophouse and what it will not do. A solar roof ventilator lowers roof space heat. It does not replace aircon. You decide with the full picture in front of you.
Our Work Gallery
Frequently Asked Questions
How much cooler will my shophouse get?
We do not promise a fixed number. Results depend on your roof, sun exposure, intake air, and ceiling condition. Independent tests of small solar attic fans have shown modest savings, so we set honest expectations before you buy.
Will it cool the room like aircon?
No. It removes heat from the roof space so your ceiling radiates less heat down. Your aircon then works easier.
Does it work on cloudy days or at night?
It slows under cloud and stops after sunset on solar only models. Some models add a backup power option. Ask us if you need airflow after dark.
Can a solar roof vent cause roof leaks?
Leaks come from poor fitting. We use matched flashing, seal every joint, test the unit before we leave, and back the work with a written workmanship warranty.
Do I need intake vents?
Often yes. The fan needs fresh air to replace what it removes. If your roof space is sealed, we add intake vents as part of the job.
Can it pull air from my air conditioned unit?
It can if the ceiling has gaps and the roof has weak intake. We check and seal gaps and plan intake so the fan pulls from outside.
How many fans does my shophouse need?
One or two cover many units. Roof space volume decides the number. We confirm it at the site check.
Do I need approval before installation?
For conserved shophouses, yes. URA approval is needed for alteration works. Tenants also need the landlord's written consent.
How long does installation take?
Many jobs finish in one day. Complex or older roofs may need longer.
Get a Free Site Check
Send us your address, roof type, and the floor that overheats. We will inspect the roof space, plan the airflow, and give you a written quote.
Learn more about solar roof ventilator fan installation for different property types.