Our Service Areas

Balıkesir

On the coast the surface stays wet with salt-bearing humidity for long stretches, and it is the total wet time rather than the amount of salt that drives corrosion. Inland the problem reverses: winter nights below freezing and a wide day-to-night swing stiffen gaskets and put the threshold through repeated freeze-thaw.

Balıkesir page

Bursa

The hardest stretch for a door is the run of winter days that brings damp air and morning frost together. Water that melts during the day freezes again in the evening and collects around the threshold and the bottom profile; that cycle hardens the weather gasket, and in time the door begins to leak air along its bottom edge.

Bursa page

Çanakkale

Wind is the defining condition. Wind-driven rain hits the gasket at several times the pressure of vertical rain, and a door that is watertight on a calm day can let water through in a storm. On the islands the load never really lets up; on the strait the wind changes direction, so both faces of the entrance take it.

Çanakkale page

Edirne

The annual swing approaches 50 degrees. Metal expands and contracts across that range, and materials with different expansion rates pull away from each other — a wooden panel on a steel leaf is the classic case. Winter fog in the Meriç basin also keeps surfaces damp for days at a time.

Edirne page

İstanbul

Winter temperatures drop a few degrees below zero, but the real wear comes from relative humidity that stays around 70% all year. The gap between the heated interior and the cold outer surface causes condensation on the inner face of an uninsulated door leaf, and those water droplets start rust in the hinge recesses and around the lock keep.

İstanbul page

Kırklareli

In the north, the surface rarely dries: forest humidity and frequent rain keep it damp, and cold northern winds drive rain against the facade. On the plain the deciding factor is the annual swing and the frost period, which stiffens standard gaskets and puts the threshold through freeze-thaw.

Kırklareli page

Kocaeli

In an industrial atmosphere the main problem is not rust but chemical fatigue in the paint: the color goes dull, the surface starts to chalk, and once the protective layer thins the metal is exposed. The humid air over the gulf speeds that process up.

Kocaeli page

Sakarya

Rainfall is spread through the year rather than concentrated in a season, so the surface stays wet for long stretches. Water that gets behind a gasket has no interval in which to dry, and on sloping ground around the lake rainwater runs toward the entrance instead of pooling in front of it.

Sakarya page

Tekirdağ

The northerly wind off the Marmara loads a door far harder than still-air rain: horizontal rain driven at pressure finds any gap in a single line of gasket. In the industrial corridor the problem is chemical rather than mechanical — the paint film dulls, then chalks, and once it thins the metal underneath is exposed.

Tekirdağ page

Yalova

The real damage happens while nobody is there. In a house closed up for months, humidity rises indoors, condensation collects on the inner face of the leaf and sits there through the season. Most of the rust and mildew complaints we see in this province start on the inside of the door, not the outside.

Yalova page

Afyonkarahisar

More than a hundred frost days a year put the door surface and the threshold through repeated freeze-thaw. Night temperatures can fall to -15 °C, and once the difference between the heated interior and outside passes 40 degrees a leaf without a thermal break turns into a conduction path.

Afyonkarahisar page

Ankara

Between summer daytime highs above 35 °C and winter nights that fall to -10 °C, the annual swing is roughly 45 degrees. Metal expands and contracts across that range, and a leaf measured to the tightest tolerance starts to bind in summer and to leave gaps in winter.

Ankara page

Eskişehir

Winter is long and the frost period tires standard gaskets. In apartment blocks the entrance door opens hundreds of times a day, so the hinge bearing and the door closer wear out long before the leaf does. The valley fog also keeps surfaces damp for days at a time in winter.

Eskişehir page

Kayseri

A frost period of more than 100 days a year puts the door surface and the threshold through repeated freeze-thaw cycles. The three most common complaints here are gaskets losing their elasticity, the latch sticking in an iced-up keep, and water pooling in the bottom profile.

Kayseri page

Konya

In summer the day-to-night difference can reach 20 degrees. That swing creates stress in doors built from materials with different expansion coefficients: when a metal leaf and a wood finish move at different rates, the finish separates or cracks.

Konya page

Aydın

On the coast salt-bearing humidity works all year and does not stop in winter; the mild Aegean winter is misleading as far as corrosion is concerned. Inland, summer temperatures pass 40 °C and a dark surface in direct sun climbs far above the air temperature, ageing the gasket quickly.

Aydın page

Denizli

Between summer highs near 40 °C and winter nights below freezing the range passes 40 degrees. Metal moves across it, and if the leaf-to-frame clearance was set for one season the door either binds or gaps in the other. The dry air also shrinks wooden surfaces.

Denizli page

İzmir

The mild Aegean winter is misleading where corrosion is concerned: the temperature never stresses the door, but salt-laden humidity works on it without a break all year. In summer the sea breeze carries salt particles kilometers inland, and salt build-up can be measured even at addresses that look far from the water.

İzmir page

Kütahya

The number of frost days is high and winter runs long. A standard gasket hardens in the cold, and water collecting along the threshold line freezes and thaws, creating a mechanical load. Around the industry, particulate settles on the paint and thins the protective layer over time.

Kütahya page

Manisa

The summer heat lasts a long time and the day-to-night difference on the Gediz plain is pronounced. Around the industry, airborne particulate settles on the paint; left unwashed the surface dulls and the protective layer thins over time. Dust off the plain also works into the lock mechanism.

Manisa page

Muğla

With a summer house, the real problem is the off-season. Humidity rises inside a closed-up house, condensation collects on the inner face of the door leaf, and it sits there for months with nobody noticing. Most of the rust and mildew marks people find when they return were formed in exactly that period.

Muğla page

Uşak

Winters are cold with a high number of frost days; summers are dry and hot. Between those two extremes a standard gasket loses its elasticity and the threshold goes through freeze-thaw cycles. Dry air shrinks wooden panels and opens the joints.

Uşak page

Adana

Summer temperatures above 40 °C in the shade, combined with high humidity, accelerate gasket aging. The wide gap between an air-conditioned interior and the outdoors creates the reverse of Istanbul's winter condensation: here the condensation forms on the outer face of the door.

Adana page

Antalya

In summer a dark metal surface in direct sun gets far hotter than the air around it. That heat fades the paint pigment, ages the gasket quickly and produces measurable expansion in the door leaf over the course of a day.

Antalya page

Burdur

Winter nights fall well below freezing and the annual range is wide, so the leaf moves and standard gaskets stiffen. Marble dust is the other local reality: it is fine, abrasive and works into the lock cylinder and the hinge seat.

Burdur page

Hatay

Humidity keeps salt wet on the surface, and sulfur compounds from the industry turn that moisture aggressive. In new buildings the wall build-up varies widely, and a door anchored into the wrong substrate loses its security value however good the leaf is.

Hatay page

Isparta

The frost period is long and snow lies for weeks at a time. Water that melts during the day freezes again at night around the threshold and the lower profile, and that cycle is what tires the gasket and the bottom edge. On the lake shore the surface also stays damp for longer than the provincial average.

Isparta page

Kahramanmaraş

Summer highs above 40 °C and winter nights below freezing give an annual range close to 45 degrees, and the leaf moves across it. In new buildings the wall structures differ from block to block, which makes the anchoring detail more important than usual.

Kahramanmaraş page

Mersin

What drives corrosion is less the amount of salt than the total time the surface stays wet. High humidity makes that time long in Mersin; between the morning dew and the night damp, the door surface almost never dries out completely.

Mersin page

Osmaniye

The wind through the Amanos gap is persistent rather than occasional, so wind-driven rain hits the gasket at pressure many times a year. Summer temperatures pass 40 °C with high humidity, which ages gasket material quickly and makes the difference between an air-conditioned interior and outside extreme.

Osmaniye page

Bartın

Humidity is high through most of the year and rain is frequent, so a door rarely gets an interval in which to dry. Water clings to horizontal surfaces and profile joints, and moisture that gets behind a gasket has nowhere to drain unless the design allows for it.

Bartın page

Bolu

Snow lies deep and long, and the melt-freeze cycle around the threshold repeats through the season. Snow banked against an outward-opening leaf can block it entirely. Humidity means the surface rarely dries, so unsealed weld seams become places where water sits.

Bolu page

Düzce

Rain is spread through the year, so the surface rarely dries out. Water that gets behind a gasket has no interval in which to evaporate. In newer buildings the wall build-up differs from block to block, which makes the anchoring detail a survey question rather than an assumption.

Düzce page

Karabük

In the industrial atmosphere the paint film dulls and chalks, and once it thins the metal beneath is exposed. In the valley the winter fog keeps surfaces damp for days. In Safranbolu the constraint is different: conservation rules govern the appearance of an entrance, so colour, proportion and detailing are decided before anything technical.

Karabük page

Kastamonu

Inland the frost period is long and snow lies for weeks, putting the threshold through repeated freeze-thaw and stiffening standard gaskets. On the coast the problem reverses: the surface rarely dries and water finds any unsealed seam. Forest humidity affects both.

Kastamonu page

Rize

Rain falls so consistently that the door never finds an interval to dry out. Water clings to horizontal surfaces and profile joints; when moisture that has got behind the gasket has no way to drain, it stays there all year.

Rize page

Samsun

Wind-driven rain loads the gasket at much higher pressure than vertical rain. A door built with a single line of gasket may be watertight in calm weather and still let water through in a storm. It shows up clearly on north-facing entrances.

Samsun page

Trabzon

Relative humidity is high for most of the year, so the door surface rarely gets a chance to dry. On sloping ground, rainwater can run toward the door instead of pooling in front of it, which makes the threshold detail critical.

Trabzon page

Zonguldak

The surface almost never dries. Coal dust settles on the paint and holds moisture against it, which turns a slow reaction into a continuous one, and the particulate also works into the lock and the hinge seat.

Zonguldak page

Erzurum

On nights when the temperature drops to -25 °C, the difference between outside and a heated interior reaches 45-50 degrees. A steel leaf without a thermal break turns into a heat conduction path at that difference: condensation on the inner face, and sometimes ice forming on the inside of the leaf.

Erzurum page

Malatya

Dry air causes wood and wood-based materials to shrink. The annual temperature swing is wide, and unless the clearance between leaf and frame allows for it, you get seasonal binding and gapping.

Malatya page

Van

A long winter, heavy snow load and moisture off the lake all come together. Snow piles up in front of the door and leaves water along the threshold line as it melts; when that water freezes again overnight, it puts mechanical stress on the gasket and the bottom profile.

Van page

Adıyaman

Prolonged extreme heat ages gaskets and sealing components quickly, and a dark surface in direct sun reaches temperatures that shorten paint life. Wind-borne dust works into the lock cylinder and the hinge seat, and on an oiled mechanism it forms a paste that stiffens the action.

Adıyaman page

Diyarbakır

Prolonged extreme heat ages gaskets and sealing components quickly. On south-facing doors in dark colors, measured surface temperatures can reach the point where you cannot touch them, which is hard on the paint and the gasket alike.

Diyarbakır page

Mardin

The wind off the plateau carries fine dust onto the facades continuously. The temperature range is wide: very hot on summer days, below freezing on winter nights. In stone walls the door openings are irregular — out-of-plumb reveals and varying wall thicknesses are common.

Mardin page

Şanlıurfa

The truly wearing combination is summer temperatures approaching 45 °C and fine, wind-borne dust. The dust works its way into the lock cylinder and the hinge seat, forming a muddy film on oiled surfaces that leaves the mechanism stiff.

Şanlıurfa page