Other Accessories

A complete portfolio of trims, fasteners, sealants, daylighting and gutter systems — everything needed to deliver a watertight, finished roof. Specified, manufactured and delivered alongside your panels for matched colour, gauge and lead time.

Wind-driven turbine ventilators

Model Series

VK-RV / 14″ / 20″ / 24″

Throat Diameter

350 / 500 / 600 mm

Material

SS304 stainless / Galvalume

Air Volume (24″)

up to 1,820 m³/h

Bearings

Sealed double-row ball

Operation

Wind speed > 0.5 m/s

Performance by throat size

Model	Throat Ø (mm)	Overall Height (mm)	Weight (kg)	Air Volume @ 3 m/s wind (m³/h)	Recommended Roof Area (m²)
VK-RV-14	350	620	5.5	720	40 – 60
VK-RV-20	500	820	8.5	1,250	80 – 120
VK-RV-24	600	950	11.0	1,820	120 – 180

Passive ventilation, zero running cost

01 Industrial Workshops

Steel-structure factories with high heat load — spinning, welding, plastic injection halls.

02 仓库

Reduces summer interior temperature 6–10°C without electrical cost.

03 Livestock Farms

Continuous fresh-air exchange for poultry, swine and dairy buildings.

04 Logistics Hubs

Smoke and humidity venting in long-span distribution centres.

Self-drilling fasteners with EPDM washer

Standard Sizes

5.5 × 19 / 25 / 32 / 50 mm

Material

Carbon Steel / SS304

Washer

EPDM-bonded steel

Coating

RAL color-matched cap

Drill Capacity

1.0 – 6.0 mm purlin

标准

ASTM C1513

Stock sizes & pull-out values

Size	Application	Substrate	Pull-out (kN, 1.5mm)	Pcs / box
5.5 × 19 mm	Stitching screw (panel-to-panel)	Steel sheet 0.4–0.8 mm	1.8	1,000
5.5 × 25 mm	Light-gauge purlin fixing	Steel 1.0–2.0 mm	3.6	500
5.5 × 32 mm	Standard panel-to-purlin	Steel 2.0–4.0 mm	5.2	500
5.5 × 50 mm	Sandwich panel through-fix	Steel 1.0–6.0 mm	5.5	250
5.5 × 80 mm	100+ mm sandwich panel	Steel 1.0–6.0 mm	5.5	200

Where every fastener earns its keep

01 Roof Panel Installation

Through-fix panel-to-purlin attachment with sealed weatherline.

02 Sandwich Panel Through-fix

50–200 mm panel thicknesses with full structural pull-out.

03 Coastal & Corrosive Sites

SS304 grade for marine, chemical and high-humidity environments.

04 Stitching & Detail Work

4.8 × 16 mm stitch screws for panel laps and trim joints.

Sealants & butyl tapes for the weatherline

Product Lines

Silicone / Butyl / Polyurethane

Cure Type

Neutral oxime (non-corrosive)

Service Temp.

−40 °C to +150 °C

Pack Size

300 ml · 590 ml sausage

Colors

White / Black / Grey / RAL

标准

ASTM C920 / ASTM C1281

Right sealant for each application

Product	Use Case	Cure	Service Temp.	标准
VK-SLT-N (Neutral Silicone)	Roof flashings, glazing perimeters	Moisture cure, oxime	−40 to +150 °C	ASTM C920
VK-SLT-A (Acetoxy Silicone)	Bathrooms, kitchens, glass-only	Acid cure, fast skin	−40 to +150 °C	ASTM C920
VK-BTL-15 (Butyl Tape 1.5×15)	Ridge / lap / eave seals	Pre-formed mastic	−30 to +90 °C	ASTM C1281
VK-BTL-20 (Butyl Tape 1.5×20)	Heavy panel laps, valleys	Pre-formed mastic	−30 to +90 °C	ASTM C1281
VK-PU (Polyurethane)	Joint movement, expansion gaps	Moisture cure	−40 to +90 °C	ISO 11600 F25

Where the seal matters most

01 Ridge & Eave Seals

Pre-formed butyl tape under ridge cap and at eave bend.

02 Panel Laps

Continuous mastic bead on horizontal and vertical laps prevents capillary water.

03 Flashing Perimeters

Neutral silicone bead between flashing and panel surface.

04 Skylight Junctions

Triple-line seal: butyl tape + silicone + over-flashing.

FRP daylighting sheets for natural light

Material

Fibre-reinforced polyester (FRP)

Light Transmission

75 – 85 %

Thickness

1.5 / 1.8 / 2.0 mm

Profile Match

Corrugated, Trapezoidal, Standing seam

UV Warranty

10 years (no yellowing)

Fire Class

Class B / B1 (FR grade)

Standard sheet dimensions & weights

Product	Profile	Thickness	Weight (kg/m²)	Light Trans.	Standard Length
VK-FRP-CO15	Corrugated 35-200	1.5 mm	2.2	82 %	up to 12 m
VK-FRP-CO20	Corrugated 35-200	2.0 mm	2.8	78 %	up to 12 m
VK-FRP-TR15	Trapezoidal 1000	1.5 mm	2.2	82 %	up to 12 m
VK-FRP-TR20	Trapezoidal 1000	2.0 mm	2.8	78 %	up to 12 m
VK-FRP-VSS	Standing seam matched	1.8 mm	2.5	80 %	up to 12 m

Daylight without skylight cost

01 Industrial Plants

Inserted between metal panels at 6–10 % of roof area for natural lighting.

02 Logistics Warehouses

Reduces daytime lighting load 60–80 %, no electrical cost.

03 Greenhouses

Diffused light promotes uniform plant growth without hot spots.

04 Sports Facilities

Even daylighting in indoor courts and pools without glare.

Box gutters, downpipes & rainwater outlets

Profiles

Box, Half-round, Square

Material

Galvalume / PPGI / SS304

Gauge

0.6 – 1.0 mm

Downpipe

Ø 100 / 110 / 150 mm

Finish

PE / PVDF / RAL match

标准

BS EN 12056

Capacity by gutter section

Profile	Section (W×H mm)	Capacity (L/s)	Roof Area (m²) @ 100 mm/h	Recommended Ø Downpipe
Box Small	150 × 100	2.5	up to 90	Ø 75 mm
Box Standard	200 × 150	5.5	up to 200	Ø 100 mm
Box Large	300 × 200	12.0	up to 430	Ø 150 mm
Half-round 125	Ø 125	2.0	up to 70	Ø 75 mm
Half-round 150	Ø 150	3.5	up to 130	Ø 100 mm

Engineered drainage for every roof

01 Industrial Roofs

Internal box gutters with roof-edge integration and overflow.

02 商业建筑

Half-round gutters with decorative brackets, color-matched downpipes.

03 Logistics Centres

Long-span gutters with siphonic outlets for high-rainfall regions.

04 Multi-storey Buildings

Concealed downpipes within structural columns to clean façade.

Trims, closures & specialty hardware

Item Family

Trims / Foams / Snow / Walkways

Stock SKUs

40+ standard items

Color-match

RAL or custom batch

Trims Material

Galvalume AZ150 / PPGI

Trim Lengths

2.0 / 3.0 m bays

Standards

JIS G3322 · EN 516

Common items at a glance

项目	Material	Standard Sizes	Finish	标准
Ridge Cap	Galvalume AZ150	2.0 / 3.0 m lengths	PE / PVDF	JIS G3322
Valley Flashing	Galvalume AZ150	0.4–0.8 mm gauge	PE / PVDF	JIS G3322
Gable Trim	Galvalume AZ150	2.0 / 3.0 m lengths	PE / PVDF	JIS G3322
PE Foam Closure	Closed-cell polyethylene	Profile-matched	White / Grey	ASTM D3575
Snow Guard Rail	SS304 stainless	1.0 / 1.5 m bays	Brushed / Mirror	EN 516
Walkway Board	Galvanized + GRP tread	3.0 m sections	Yellow / Black tread	EN 516 Class 2

The finishing details that make a roof watertight

01 Ridge & Hip Lines

Color-matched ridge caps with foam closures underneath for wind-driven rain.

02 Valley & Eave Detail

Pre-formed flashings shaped to your roof pitch and panel profile.

03 Cold-climate Roofs

Pipe and pad-style snow guards prevent slab avalanche over entryways.

04 Maintenance Access

Anti-slip walkways for safe access to skylights, HVAC and PV arrays.

Specify a Complete Roof Package

Tell us your panel selection — we'll auto-generate a recommended accessory schedule with quantities, sizes and lead times. One-stop procurement, color-matched, ready to install.