Trebbiano Flat Roof Glass Veranda

System Overview: The Deponti Trebbiano is a premium flat-roof glass veranda system featuring integrated LED lighting and a heavy-duty span capability. It is designed for modern properties where clean lines and minimal vertical height are required.

What's Included in the Price?

Unlike some modular kits, our online price is for the complete package:

• Aluminium Frame: Complete powder-coated structure (Posts, Gutter, Wall Profile, Beams).
• Roof Glass: INCLUDED. We supply high-specification 8.8mm (44.2) Laminated Safety Glass as standard with every kit.
• Integrated Lighting: INCLUDED. Complete LED lighting system with Somfy remote control receiver and handset.
• Fixings: All necessary stainless steel assembly screws and rubber gaskets. (Wall/floor anchors are site-specific and not included).

Key Dimensions

• Gutter Profile: Heavy-duty 145mm x 300mm flat-face profile.
• Support Posts: Extra-large 150mm x 150mm square posts.
• Max Clear Span: Up to 6806mm clear span between just two posts.
• Standard Height: Max height of 2800mm (top of gutter). Can be cut down on-site for lower installations.

Standard Width Configurations

The Trebbiano is available in fixed modular widths to accommodate standard glass sizes:

Available Projections

Choose from four standard depths (projection from the wall):

• 2982mm (approx 3.0m)
• 3482mm (approx 3.5m)
• 3982mm (approx 4.0m)
• 4482mm (approx 4.5m)

Lighting Specification

• Type: Integrated LED Strip Lighting (Warm White).
• Position: Concealed in the rear face of the front gutter, projecting light backwards across the roof.
• Control: Somfy Receiver & Handset included (dimmable). Compatible with Somfy Tahoma Switch for smart home integration.

Snow & Wind Load

The Trebbiano is engineered to high structural standards:

• Snow Load: Rated for up to 1.04 kN/m² (approx 106 kg/m²).
• Wind Load: Rated for high wind suction loads (1.22 kN/m²).
• Safety: The 8.8mm laminated glass ensures that even in the unlikely event of breakage, the glass remains held in place by the PVB interlayer, preventing dangerous shards.

The Deponti Trebbiano is a precision-engineered flat roof system. Unlike pitched verandas, the Trebbiano uses a sophisticated internal gradient to manage water while keeping the external appearance perfectly level. Accurate setting out is essential.

1. Standard Dimension Table

The Trebbiano comes in specific modular widths. Use the table below to verify your ordering sizes and post positions. (All dimensions in mm).

2. Height & Levelling Rules

The Trebbiano is designed to look flat from the outside, but the glass inside has a hidden slope of at least 28mm per metre to ensure drainage. The system manages this within the main beams.

• Maximum Height: The maximum standard height from ground level to the top of the gutter is 2800mm.
• Wall Plate Position: The top of the wall profile sits 20mm higher than the top of the front gutter to assist flow.
  Example: If your front gutter top is at 2500mm, your wall profile top must be at 2520mm.
• Post Lengths: Posts are supplied over-length (typically 2800mm+) to allow for concreting into the ground. If bolting to a finished patio, they must be cut to the exact required height (Ground to Bottom of Gutter).

3. Ground Fixing Options

Due to the large spans (up to 7m on two posts), the foundation load is significant. Secure fixing is non-negotiable.

Option A: Concrete Foundation (Recommended)
For the strongest install, dig a foundation hole (min 500mm deep), place the post inside, level it perfectly, and backfill with concrete. This provides maximum lateral stability.

Option B: Blind Mounting Base (Surface Fix)
If installing onto an existing reinforced concrete slab, you can use the Blind Mounting Base kit.

• Anchor Method: We recommend using M12 chemical anchors (e.g., Hilti HY-200) with a bonding depth of 170mm for maximum safety.
• Note: Do not bolt standard plates onto paving slabs alone; they will lift under wind load.

4. Rainwater Drainage

The drainage is hidden inside the posts for a clean look.

• Outlet Position: You must drill a 60mm hole in the post to align with your chosen drainage exit point (either below ground to a soakaway or just above ground).
• Leaf Catcher: An integrated leaf catcher is fitted inside the gutter outlet to prevent blockages in the post.
• Gradient: Ensure the internal glass slope is maintained during assembly so water runs to the front gutter naturally.

5. Electrical Connection (LEDs)

The Trebbiano includes integrated LED lighting. During installation:

• Cable Routing: You will need to drill a 10mm hole in the back of the side beam to route the power cable invisibly from the wall to the front gutter.
• Driver Location: The LED driver (transformer) is compact enough to be hidden inside the wall profile or behind the rafter cover for a neat finish.

The Deponti Trebbiano is a precision-engineered system. To ensure your investment is protected and continues to look its best, please review the warranty terms and simple maintenance guidelines below.

Manufacturer's Warranty

Your Trebbiano Veranda is covered by a comprehensive Deponti warranty against manufacturing defects:

• Aluminium Structure: 5-Year Warranty on the structural integrity of the profiles.
• Powder Coating: 5-Year Warranty on the finish against peeling or blistering.
  *Note: For coastal areas (within 1km of the sea) or locations with high chemical exposure (e.g., swimming pools), the finish warranty is 2 Years.
• Electrical Components: 2-Year Warranty on the LED lighting strips, drivers, and Somfy receiver/handsets.
• Glass: The 8.8mm laminated glass is a durable safety product; however, breakage due to impact or thermal shock is not covered by warranty.

Warranty Conditions

To keep your warranty valid:

• Correct Assembly: The veranda must be installed strictly according to the official Deponti Trebbiano Assembly Manual.
• No Unauthorised Mods: Structural modifications (drilling or cutting beams beyond the manual's instructions) will void the warranty.
• Original Parts: Use only the supplied stainless steel fixings and original electrical components.

Maintenance Guide

Regular maintenance ensures the smooth operation of the drainage system and keeps the powder coating fresh:

• Cleaning (2x Per Year): Wash the aluminium frame with lukewarm water and a neutral cleaning agent (pH 6-8) using a soft sponge.
  Warning: Never use high-pressure washers, scouring pads, or acidic/alkaline cleaners, as these will damage the paintwork and rubber seals.
• Drainage Check: The Trebbiano has hidden internal drainage. Twice a year (especially Autumn), remove the leaf catcher from the gutter outlet and clear any debris to prevent water backing up inside the posts.
• Glass Care: Clean the glass roof panels regularly with standard glass cleaner to maintain light transmission. Avoid walking on the glass during cleaning.

Measuring for the Trebbiano is straightforward, but because of its unique flat-roof design, checking your heights is critical. Follow this guide to ensure a perfect fit for your home.

1. Measuring the Width (Along the Wall)

The Trebbiano comes in fixed modular widths based on standard glass panel sizes. You cannot simply "cut down" the width like other models without needing new custom glass.

• Select Your Size: Choose the width that fits best within your available wall space: 3914mm, 4878mm, 5842mm, or 6806mm.
• Clearance: Ensure the wall area is free of obstructions like soil pipes, flues, or gas outlets.
• Side Overhang: Unlike pitched verandas, the Trebbiano width is the total external frame width. There are no side overhangs to worry about.

2. Measuring the Projection (Depth)

The projection is the total depth from the wall to the front face of the gutter.

• Available Depths: 2982mm, 3482mm, 3982mm, 4482mm.
• Post Position: The front support posts sit flush with the front of the gutter, not set back. Ensure your patio or foundation extends to the full projection depth to support the posts securely.

3. Checking Heights (Critical for Flat Roofs)

The Trebbiano is designed to look flat, but has a subtle internal engineering difference between the front and back to allow for drainage.

The "20mm Rule":
The top of the Wall Profile will always sit 20mm higher than the top of the Front Gutter.

• Step 1: Determine your Gutter Height
  Decide how high you want the front of the veranda to be. The maximum standard height is 2800mm (Ground to Top of Gutter). You can cut the posts shorter on-site if you prefer a lower profile (e.g., 2500mm).
• Step 2: Calculate Wall Height
  Add 20mm to your chosen gutter height. This is where the top of your wall plate will sit against the house.
  Example: If Front Gutter Height = 2500mm, then Wall Plate Height = 2520mm.
• Step 3: Check for Obstructions
  Measure 2520mm (or your calculated height) up your wall. Does this fit under your soffits, gutters, or first-floor window sills?

4. Final Checklist

• Door Clearance: Open any bi-fold or French doors. Measure the top of the door leaf. Ensure your chosen veranda height allows the doors to open outwards without hitting the underside of the roof beams.
• Floor Level: Is your patio level? If the ground slopes away from the house, you may need longer posts or to build up your foundations to keep the roof perfectly level.
• Electrical Supply: Do you have a power source nearby? Remember you will need to feed a cable into the side beam for the integrated LED lighting.

H: Height from ground to top of beam
H1: Height from ground to bottom of wall profile
H2: Height from ground to underside of beam
H3: Height from ground to underside of gutter
B: Length of wall profile
D: Distance from rear of wall profile (wall) to front of posts