SKU: B109 Category: Door Hardware

Door Knocker WHALE FIN Cast Antique Iron 148mm

Name: Door Knocker WHALE FIN Cast Antique Iron 148mm
SKU: B109
Availability: InStock

The Reclaimed Co. Price:

£14.69 + Vat

62 in stock

🚚 Delivery
🏪 Collection

Delivery calculated at checkout and can be delivered nationwide by pallet/courier or locally by our own fleet

Your nearest store:

York

Sutton Road, Wigginton, YO32 2RB

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Introduce a touch of maritime charm to your home with the Whale Fin Door Knocker, which features a unique whale fin design, adding a nautical and sophisticated accent to any entryway.

|PRODUCT DETAILS|

Dimensions: 6” (148mm)
Style: Antique iron
Colour: Natural iron finish
Material: Made from Solid Cast Iron, traditionally cast
Coating: Protective wax (a natural finish that will age over time)
Holes drilled in each side for fixings
Knockers sold individually
Sold with screws, please contact us for any queries on fixings
See wider door knocker range

Products are typically shipped within 1-2 days. Full details on shipping can be found here

+Product Info

Description

Introduce a touch of maritime charm to your home with the Whale Fin Door Knocker, which features a unique whale fin design, adding a nautical and sophisticated accent to any entryway.

|PRODUCT DETAILS|

Dimensions: 6” (148mm)
Style: Antique iron
Colour: Natural iron finish
Material: Made from Solid Cast Iron, traditionally cast
Coating: Protective wax (a natural finish that will age over time)
Holes drilled in each side for fixings
Knockers sold individually
Sold with screws, please contact us for any queries on fixings
See wider door knocker range

|DESIGN & MATERIALS |

Each door knocker is designed here in the UK
Made using the highest quality cast iron
Each item is handmade and hand finished using traditional methods – this can mean there may be some variances between products.

|SHIPPING|

Products are typically shipped within 1-2 days. Full details on shipping can be found here
Full details on shipping can be found here

|ABOUT US|

Adfix are a family business, with 30+ years experience in the ironmongery sector. Based at the foot of the Yorkshire Wolds, we design and supply quality antique, vintage & industrial style ironmongery to a range of trades including architects, boutiques, interior designers, cabinet makers and building firms. Our range includes cast iron, rustic iron and hand forged fittings in antique, vintage and industrial styles. Read more here

Slate Calculator

Slating Headlap

Lap

Expandable Headlap Info

Choosing Headlap

Definition: The vertical overlap between successive rows of tiles to prevent water ingress.

Factors to consider:

Roof pitch: Shallower pitches (< 30°) need 75–100 mm; steeper (> 45°) can use 50 mm.
Climate & exposure: Wind-driven rain or heavy rainfall zones benefit from more headlap.
Tile profile: Deeper tiles may require extra overlap to seal correctly.

Rule of thumb:

Standard (30–45°): 50–75 mm
Low (< 30°): 75–100 mm
High (> 45°): 50 mm

Slate Size / Type

Slate 50mm Lap

Selecting Tile Size

Coverage per tile: Larger tiles cover more area but are heavier, affecting handling and substrate load.

Aesthetic scale: Big tiles suit modern, minimal lines on large roofs; smaller tiles give more texture and a traditional look.

Structural limits: Check rafters and battens can support the chosen tile’s weight and fixing centres.

Installation speed vs. waste: Larger tiles lay faster but may require more cutting at edges, increasing waste. Smaller tiles take longer but can reduce off-cuts.

Compatibility: Ensure the tile size works with your chosen headlap & side-lap for correct coverage per m².

By balancing pitch, weather, substrate capacity and appearance, you’ll pick the optimal tile size for performance and style.

Slate 75mm Lap

Selecting Tile Size

Coverage per tile: Larger tiles cover more area but are heavier, affecting handling and substrate load.

Aesthetic scale: Big tiles suit modern, minimal lines on large roofs; smaller tiles give more texture and a traditional look.

Structural limits: Check rafters and battens can support the chosen tile’s weight and fixing centres.

Installation speed vs. waste: Larger tiles lay faster but may require more cutting at edges, increasing waste. Smaller tiles take longer but can reduce off-cuts.

Compatibility: Ensure the tile size works with your chosen headlap & side-lap for correct coverage per m².

By balancing pitch, weather, substrate capacity and appearance, you’ll pick the optimal tile size for performance and style.

Slate 100mm Lap

Selecting Tile Size

Coverage per tile: Larger tiles cover more area but are heavier, affecting handling and substrate load.

Aesthetic scale: Big tiles suit modern, minimal lines on large roofs; smaller tiles give more texture and a traditional look.

Structural limits: Check rafters and battens can support the chosen tile’s weight and fixing centres.

Installation speed vs. waste: Larger tiles lay faster but may require more cutting at edges, increasing waste. Smaller tiles take longer but can reduce off-cuts.

Compatibility: Ensure the tile size works with your chosen headlap & side-lap for correct coverage per m².

By balancing pitch, weather, substrate capacity and appearance, you’ll pick the optimal tile size for performance and style.

Slates Per m2

Expandable Slates per m² Info

Calculating Slates per m²

Definition: Number of slates needed to cover one square metre.

Formula: 1 000 000 mm² ÷ (effective width × effective height)

Where:

Effective width = tile width – side lap
Effective height = tile height – head lap

Example: 610 mm × 355 mm tile, 20 mm side lap, 75 mm head lap:

Effective width: 610 − 20 = 590 mm
Effective height: 355 − 75 = 280 mm
Area per slate: 590 × 280 = 165 200 mm²
Slates per m²: 1 000 000 ÷ 165 200 ≈ 6.05

Adjust your headlap and sidelap values for precise coverage calculations.

Slate Required(Required)

Measure Your Roof Area

Determining Your Roof’s Area (m²) Accurately measuring your roof is essential to estimate how much slate you’ll need. Follow these steps: Measure the rafter length Runs from the gutter up to the ridge line.

Width (m)

Length (m)

Total Mtr²

Total Slates Required

Copper Nails Total KG

Expandable Copper Nails Info

Copper Nails for Slating: Overview & Specs

Why use copper nails?

Corrosion resistance: Forms a protective patina to prevent rust and staining.
Superior durability: Lasts for decades without needing replacement.
Optimal flexibility: Absorbs roof movement without cracking or shearing.
Aesthetic harmony: Weathers to a warm patina that complements natural slate.
Chemical compatibility: No galvanic reaction with slate or lead flashings.

Packaging & usage: