How long a security screen door lasts, and the signs it is due

The short answer: a warranty is not a lifespan

The warranty is the only figure the makers cited here put in writing, and it measures cover rather than wear. SCREENGUARD covers its screens for 10 years from installation against defects in materials and manufacturing, provided the care and maintenance schedule has been kept. PERFGUARD products carry a 7 year warranty from the date of installation, conditions applying.

That cover has edges. SCREENGUARD says its warranty does not apply to damage caused by abuse, fire, accident, acts of God or alteration of the product. A door that has been cut down, re-meshed by someone else or knocked by a trailer is outside it, however young it is. SCREENGUARD also notes that nothing in its warranty limits your rights under the Australian Consumer Law.

So read the warranty as what the maker stands behind, on the condition that the screen is looked after. How long a door keeps working in practice depends on the parts below, the grade of metal and how close the house sits to salt water.

What wears first: often the moving parts

Rollers, locks, hinges and closers work every time the door is used, and salt and grit reach the track and all of them. SCREENGUARD says salt and grit do more harm to a lock cylinder than to mesh.

Hardware makers write their care around that. Austral Lock's instructions for its Elegance XC lock ask for an annual check that the door still has the correct clearances and opens and closes without obstruction, and for the strike plates to be wiped every quarter. Gainsborough says an extreme climate or a dusty spot can affect the lubricant its hardware leaves the factory with, so it may need re-lubricating. A&L Windows says the operational life of its products is increased by light machine oil on moving parts, hinges and slides.

The useful part is that these parts can be swapped. Rolltrak, which supplies screen door rollers, says a door that no longer slides smoothly may need new rollers rather than a whole new door. The table below sets out each part.

Mesh and frame finish near the sea: grade and washing decide

Mesh and frame finish last longest where the metal suits the exposure and salt is washed off on schedule. The Australian Stainless Steel Development Association (ASSDA) says grade 316, or an equivalent, should be the minimum within five kilometres of the surf. It warns that lower grades such as 304 will probably tea stain, or suffer more severe corrosion, in a marine environment. The SCREENGUARD mesh we fit is 316 marine grade stainless steel.

Tea staining on its own is not the end of a screen. ASSDA describes it as a cosmetic issue that does not affect the structural integrity or the lifetime of the steel. The more serious risk is water trapped in corners and crevices, which ASSDA says can lead to worse corrosion than tea staining. High humidity and heat, as in tropical climates, make conditions worse.

Frames need the same care. SCREENGUARD frames are T6 extruded aluminium with a powder coat, and the maker says the coating is what has to survive a decade of UV. Dulux Powder Coatings says regular removal of residues extends the effective life of a powder coat.

The warranty and the wash schedule: distance from the coast sets the interval

On a SCREENGUARD screen, washing is a warranty condition rather than a nicety. Regular maintenance with SCREENGUARD Powawash is required to keep the 10 year warranty valid, and SCREENGUARD sets the interval by how far the house is from the coast. Within 5 km of the coast it asks for a wash every 2 weeks.

Sheltered doors need the closest watch. SCREENGUARD points out that a door under a deep verandah or eave never gets rinsed by rain, so deposits accumulate there. That matches ASSDA's view that conditions are very aggressive for stainless steel in rain-sheltered spots.

Hardware carries its own schedule. The same Austral Lock instructions ask for powder coated surfaces to be cleaned every two to three months in coastal areas, and ask owners to record maintenance in a log to protect the warranty. Keeping a simple note of wash dates for the door and its lock costs nothing and helps if a claim is ever needed. Our cleaning guide covers the routine itself.

• Within 5 km of the coast, marine or heavy industrial: every 2 weeks
• About 10 km from the coast or high traffic areas: every 3 months
• About 15 km from the coast, rural or suburban: every 6 months

Signs a part needs replacing

A single worn part usually shows itself before the door as a whole is in trouble. The signs below follow the hardware makers' care notes. Each points to a part that can be checked or replaced on its own, and our guide to common security screen door problems matches each symptom to its likely cause.

Two warnings sit alongside the list. A&L Windows says not to keep using a sliding door that scrapes on its track, because it causes scoring and possible failure of the rollers. Austral Lock's instructions for its Elegance XC lock say the lock assembly is lubricated for life and shouldn't be taken apart by the user, so a fault in a lock like that is a replacement job rather than a strip-down. If the lock or the slide is the problem, our guides to a lock that won't work and a sliding door off its track go further.

• A slider that runs rough, grinds or scrapes along the track
• Rollers that are bent, broken or no longer hold the door level
• A key that turns stiffly or grinds in the lock
• A door that drags, or no longer closes and latches without a push
• A door that has dropped on its hinges, so the gap to the strike plate has changed

Signs the screen itself needs assessing or replacing

The screen itself is due when the mesh or frame has failed in a way parts can't fix. Pitting is a sign to have the mesh assessed rather than a verdict: ASSDA says a pitted stainless surface will probably need mechanical repolishing, which is a long way past a wash. Tea staining that keeps coming back on a beachfront house can point to a grade that doesn't suit the exposure, since ASSDA expects grades like 304 to stain near the sea.

Distorted mesh is another limit. SCREENGUARD notes that mesh is tensioned in its frame and that a high-pressure washer can distort it. A security screen also has to be the product that was tested: the National Security Screen Association (NSSA) says a security screen must pass testing to the Australian Standard for security screens and carry a compliance label. A patched or altered panel may no longer match the product that was tested and labelled, which our guide to torn fly screens and security mesh explains.

• Pitting on the mesh, not just a brown film that washes off, which calls for an assessment
• Mesh that bulges, has pulled from the frame or has been cut
• Corrosion lifting the powder coat at frame corners and joints
• A frame that has twisted, so the door no longer sits square
• A missing or unreadable compliance label on a door you rely on for security

Repair or replace: a simple test

Repair is usually worth it while the mesh and frame are sound and the fault is in a part. Replacement makes sense when the screen itself has failed. Work through these steps in order and stop at the first one that gives a clear answer.

Keep the boundary in mind as you go. Washing, looking and the checks in the maker's care notes are owner jobs. Lifting a door off its track, opening a lock, re-hanging or packing a door, and any mesh work are repair jobs. The NSSA says compliant security doors are made and installed to very tight tolerances with specialised fixings, and recommends against DIY installation. In Queensland, the QBCC lists fabricating and installing security screens and doors within its glass, glazing and aluminium licence class.

1. Check the warranty card first. If the door is inside its period and the care schedule was kept, start with the supplier who installed it.
2. Look at the mesh and frame. Distorted mesh or a twisted frame means the screen is due, whatever the hardware is like. Pitting is beyond a wash and needs assessing, since ASSDA says a pitted surface will probably need mechanical repolishing.
3. If the mesh and frame are sound, list the faulty parts: rollers, lock, hinges, closer.
4. Ask whether those parts can be replaced on the existing door. Rollers, locks, hinges and closers usually can.
5. Compare the repair with a new made to measure door, and factor in whether the mesh grade suits how close you are to the sea.

Next steps: compare the mesh, or book a repair

If the door is sound and only a part has worn, a repair visit is the quicker fix. We repair at your property around Cairns, replacing lock cylinders or complete locks, wheels and track work on sliding doors, and door closers, hinges, triple locks and patio bolts. See what a visit covers on our onsite repairs page, and tell us what the door is doing through the quote form on our contact page.

If the screen is due, the grade of mesh matters more than anything else on the coast. Our guide to 316 versus 304 stainless steel mesh explains the difference, and our stainless steel security screens page covers the SCREENGUARD range. Our doors and screens are made to measure and manufactured in Cairns. Check the areas we serve or our Cairns security screens page for coverage.