Sealed Roofing Fixings for Steel & Timber Battens

Roofing crews can encounter steel purlins, metal battens & timber battens across different jobs—or even different sections of the same project. ICCONS® | Metal/Timber Washered Hex Screws Retail Packs provide a practical roofing fixing for compatible metal roof sheet installations across both steel & timber supports.

ICCONS® Roof-Stars combine a universal drilling point, 11 TPI thread, 5/16 hex head, EPDM sealing washer, upper-shank protection & Class 4 galvanised finish. The documented 13-11 × 50 mm configuration is designed for metal roof sheets fixed to compatible metal battens, steel purlins or timber battens.

Correct roof fastening depends on the complete connection beneath the screw head. Support material, steel thickness, sheet profile, screw length, washer condition & final seating should all be checked before repetitive installation begins.

What Are ICCONS® Metal/Timber Washered Hex Screws Retail Packs?

These ICCONS® Roof-Stars are purpose-built roofing screws designed to work across compatible metal & timber supports. Instead of carrying separate screw types simply because the supporting member changes, installers can use the universal-point configuration where the documented application requirements are met.

The TP162W configuration includes:

► TP162W – SD Hex Metal/Timber Washered C4
► 13-11 × 50 mm screw size
► 5/16 external hex drive
► 33 mm documented thread length
► 0.55–1.90 mm documented steel drilling capacity
► EPDM sealing washer
► Class 4 galvanised finish
► Universal point for compatible steel or timber
► 20 screws per documented pack

The universal point gives Roof-Stars their practical advantage on roofing work. ICCONS specifies the screw for fixing metal roof sheet to metal battens, steel purlins or timber battens, provided the connection falls within the documented requirements.

For other fastening requirements around roofing, framing & building work, Specialty Fasteners & Fixings provides additional application-specific hardware.

Why Choose ICCONS® Metal/Timber Washered Hex Screws?

One Point for Steel or Timber Supports

Finding a different support material underneath the next roof section doesn't always require a completely different screw. The Roof-Stars universal point is designed for compatible steel & timber applications.

When fastening into steel, the documented TP162W drilling capacity is 0.55–1.90 mm. Supporting steel should be verified before installation rather than estimated from appearance.

EPDM Sealing at the Roof Sheet

Every fastener creates a penetration through the roofing sheet, making the washer a critical part of the completed fixing. The EPDM washer forms the sealing interface beneath the screw head.

During installation, the washer should remain correctly positioned & seat evenly against the roof sheet without excessive compression or visible distortion.

11 TPI Thread for Roofing Installation

Repeated roof-sheet fixing calls for a screw designed around the task. Roof-Stars use an 11 TPI thread as part of the documented roofing configuration.

Driving should remain controlled as the washer approaches the sheet so the final connection can be inspected properly.

Upper-Shank Protection

Drilling through steel can create burrs & swarf around the fixing path. ICCONS incorporates upper-shank protection designed to create clearance, help reduce burr-related damage to the EPDM washer & protect the coating on the upper thread.

For further practical information about selecting the correct fastener for the connection, read Why Good Fasteners Matter More Than the Tool You Drive Them With.

Common Applications

Metal Roofing Over Timber Battens

Timber-supported roofing requires the screw to establish reliable engagement while sealing the sheet penetration above it. Roof-Stars can be used for compatible metal roof sheet installation over timber battens.

Check the timber condition, sheet profile, screw length & roofing-system requirements before installation.

Roof Sheet to Metal Battens

Light-gauge metal battens introduce a drilling requirement that timber supports do not. The universal point allows Roof-Stars to penetrate compatible steel within the documented capacity without a separate pre-drilling operation.

Where supporting steel falls outside the specified range, review the required fixing rather than forcing the screw through heavier material.

Roofing Over Steel Purlins

Steel purlins provide another common support condition beneath metal roofing. ICCONS lists steel purlins among the intended applications for Roof-Stars where the material thickness & complete connection suit the selected screw.

Where a project also includes primary steel connections, Structural Fasteners & Bolts should be considered separately according to the applicable design requirements.

Roofing Repairs With Mixed Supports

Older roofs can reveal unexpected combinations of timber & steel when damaged sheets are removed. A universal-point roofing screw can simplify suitable repairs where the underlying support has first been identified & checked.

Inspect previous fixing holes, sheet condition & the supporting member before installing a replacement screw.

Sheds & Light Commercial Roofing

Sheds, workshops & light commercial buildings often involve long runs of repetitive sheet fixing. Roof-Stars provide a sealed fastening option for compatible roofing installations across timber or steel supports.

For mechanical fastening requirements elsewhere in the building, Bolts & Fasteners covers additional connection types beyond roof-sheet fixings.

Roof Extensions & Alterations

An extension needs to match more than the existing roof-sheet profile. Identify whether new sections are supported by timber battens, metal battens or steel purlins, then confirm that the proposed screw suits the support & roofing specification.

Where existing fastener information is available, retain it for future repairs & maintenance.

Product Selection Guide

Start by identifying what sits directly underneath the roof sheet. The supporting material determines whether the universal point will be entering timber or drilling through steel.

Identify the Supporting Member

Common support conditions include:

► Timber battens
► Compatible metal battens
► Steel purlins within the documented drilling capacity

For the documented TP162W configuration, supporting steel should fall within the 0.55–1.90 mm drilling range.

Where other screw formats are required elsewhere on the project, Screws & Anchors provides broader fastening options.

Confirm the Roof-Sheet Assembly

The visible sheet is only one part of the connection. Sheet profile, material thickness, overlaps & supporting-member position can all affect the installation.

TP162W uses a 13-11 × 50 mm configuration with a documented 33 mm thread length.

Inspect the EPDM Washer

Treat the washer as part of the fastener rather than an optional accessory. Before driving, confirm that it is correctly positioned & free from visible damage.

After installation, inspect the washer for even seating around the fixing.

Prepare the Correct Driver

Roof-Stars use a 5/16 external hex head. A correctly fitting nut setter helps maintain positive engagement while allowing controlled final seating.

Impact Drivers support compatible repetitive fastening work, while Drill Accessories can help crews prepare the required driving accessories.

Consider the Installation Environment

Exterior roofing fasteners need suitable protection for their intended conditions. The documented Roof-Stars configuration uses a Class 4 galvanised finish for external applications.

Where unusual corrosion exposure or project documentation calls for another fastener material, follow the specified requirement.

Roof-Stars Connection Check

Expert Tips

Inspect Washer Compression From the Side

A top-down view can make poor washer seating difficult to spot. Inspect completed fixings from an angle so displaced, folded or excessively compressed EPDM is easier to identify.

Verify Steel Instead of Increasing Driver Force

Unexpected resistance can indicate that the support differs from what was expected. Check the steel thickness, screw alignment & fastener specification before applying additional force.

Clear Metal Swarf as Work Progresses

Small steel particles should not be left scattered across a completed roof surface. Remove drilling debris regularly & inspect around finished fixing lines.

For practical preparation before periods of heavy site work, Spring Jobsite Prep Getting Your Gear Ready covers useful equipment & jobsite checks.

Inspect Existing Holes During Roof Repairs

Installing a new screw doesn't automatically restore a damaged fixing location. Check for enlarged holes, damaged sheet material or deterioration in the supporting member before installing the replacement.

Keep Roofing Screws Identifiable

Similar-looking hex screws can use different points, coatings, threads or washers. Retaining Roof-Stars in identified packaging reduces the risk of an incorrect fastener being used during repairs.

Portable Organisers can help separate roofing screws, nut setters & other small installation components when moving between work areas.

Control the Final Seating

Driving speed should reduce as the EPDM washer reaches the roof sheet. Controlled final seating helps prevent unnecessary washer distortion & makes the completed fixing easier to inspect.

Recheck the Connection When the Support Changes?

Moving from timber battens to steel purlins changes what the universal point is penetrating. Confirm steel thickness at substrate transitions before continuing the fixing run.

Follow the Roofing-System Requirements

Fastener suitability is only one part of a correctly installed roof. Follow applicable project drawings, engineering requirements & roofing manufacturer's instructions for fixing position, spacing & installation.