Sliding Door Maintenance · Gauteng · October 2026
Sliding Door Maintenance — What to Do and When
A properly maintained sliding door can last 20 years or more. One that's neglected will need new rollers within five. The good news: maintenance takes less than 15 minutes a month, and the products you need cost under R100 at any hardware store. Here's the exact routine.
If your door already feels heavy, maintenance won't fix worn rollers — we can.
Call 078 246 4898Monthly maintenance — 10 minutes
Step 1: Clean the bottom track
Use a stiff brush — an old toothbrush or a dedicated track brush — to dislodge debris from the bottom track channel. Work along the full length of the track, pushing material toward the ends where it can be swept out. Then wipe the track clean with a dry cloth.
Do not use water in the track. Moisture promotes rust on the steel ball bearings inside the rollers. If the track is heavily soiled, a small amount of methylated spirits on a cloth is safe to use — it evaporates completely and leaves no residue.
Step 2: Lubricate with silicone spray
Apply silicone spray to the rollers through the gap at the base of the door. Aim the nozzle at the roller housing and give it a 2-second burst on each side. Then slide the door open and closed several times to distribute the lubricant through the bearings.
Do not use WD-40, oil, or grease: Oil-based lubricants attract dust and grit, which combines with the oil to form an abrasive paste inside the roller bearings. This accelerates wear dramatically. Silicone spray is the only lubricant to use on sliding door rollers.
Step 3: Wipe the door frame
Wipe down the aluminium frame with a damp cloth, paying attention to the bottom rail where grit accumulates. A mild detergent is fine for the aluminium — avoid abrasive cleaners or steel wool, which scratch the anodised surface.
Quarterly maintenance — 15 minutes
Check the door's alignment
Stand in front of the closed door and check the gap between the door frame and the fixed frame on all four sides. The gap should be even — roughly 3–5mm all around. A gap that's wider at the top than the bottom (or vice versa) indicates the door has dropped and the rollers need height adjustment.
Visually inspect the rollers
Lift the door slightly at the base and check that the rollers spin freely. Gritty, rough, or non-spinning rollers are ready to fail. A roller that you can't spin freely by hand will fail within weeks under load. Catching them before they seize protects the track from damage.
Test the lock
Open and close the lock several times. It should engage smoothly with no stiffness or grinding. Lubricate the lock body with a graphite-based lubricant or a dry PTFE spray — not silicone or oil, which can attract dust in the lock mechanism. If the handle feels stiff or the lock doesn't engage fully, have it inspected before it fails completely.
Check the bottom guide
The bottom guide is the small plastic or nylon piece at the base of the door that keeps it centred on the track and prevents side-to-side wobble. Check that it's intact and seated in its track channel. A cracked or missing guide will allow the door to swing and eventually jump off the track.
When maintenance isn't enough
If the door still feels heavy or makes grinding noises after a thorough clean and lubrication, the rollers need replacing — not more maintenance. Maintenance keeps good rollers going longer; it cannot restore worn bearings. The same applies to a track that has been gouged or bent — cleaning won't fix surface damage.
Professional service interval: We recommend a professional roller inspection every 2 to 3 years for a regularly used sliding door, or every year in a household with heavy daily use. Catching rollers at 50% wear costs from R850 — a fraction of what a seized roller and damaged track costs to repair.
Monthly maintenance checklist:
- Brush and wipe the bottom track clean (dry — no water)
- Apply silicone spray to the rollers through the door base
- Slide the door open and closed 5 times to distribute lubricant
- Wipe down the aluminium frame with a damp cloth
- Check that the door slides without resistance after lubrication
Frequently Asked Questions
- What lubricant should I use on my sliding door?
- Silicone spray only. Not WD-40, oil, or grease — these attract dust and form an abrasive paste that destroys roller bearings. Silicone is clean, safe for all components, and available at any hardware store.
- How often should I clean my sliding door track?
- Monthly. In Gauteng's dusty environment — particularly the Highveld in August and September — monthly cleaning prevents the rapid grit build-up that accelerates roller wear.
- How long do sliding door rollers last?
- 8 to 15 years with regular maintenance. 3 to 5 years without. Monthly track cleaning and silicone lubrication is the single biggest factor in roller lifespan.
- My door still feels heavy after cleaning and lubricating — what now?
- The rollers need replacing. Maintenance can't restore worn bearings. A roller replacement starts from R850 — call 078 246 4898 for a same-day appointment.
Need a professional sliding door service?
If your door is already heavy or grinding, maintenance won't fix it — worn rollers need replacing. Same-day service across Gauteng. From R850, no call-out fee, 6-month guarantee.