Custom-made boat hardtops 

custom made fiberglass for your boat

Building a fiberglass roof

The hardtop is entirely made out of fiberglass, which makes it light enough to place it on your bimini top framework. Also, to stop the water flowing into the cockpit, we build a water channel into the hardtop.

The middle strip gives the roof more stiffness and can be used to place mobile solar panels or other small equipment. Safety always comes first -  to make your time on the boat as safe as possible; we integrate two handrails.

Send measurements 

Please tell us how long and wide you want your hardtop.

Receive free offer  

We will prepare a free quote for you, including the shipping costs and delivery time.


After the contract has been signed and the first down payment has been paid, we will start building.

Build & ship

We will keep you UpToDate with pictures during the process. The hardtop will be shipped after the last payment has been paid.

1 year guarantee for the fiberglass hardtop

Let's build your boat hardtop

To send you a quote for your custom-made hardtop, please fill out the formula below or send us an email to info(a)

Boat hardtop measurements. Choose between sport design  or rectangle design.


These shipping costs are based on our previous clients.
Please remember that these numbers are not based on the current rates and are for our standard hardtop.
(2,00 m x 2,27m). Custom-made hardtops have different sizes and, therefore, different rates. For an accurate price, we will have to request a shipping quote.

(FOB prices)
Sydney, Australia: USD 400 - 500
Brisbane QLD, Australia: USD 300 - 400
Auckland, New Zealand: USD 500 - 600
Southampton, UK: USD 600 - 700
New York, NY, USA: USD 800 - 900
San Francisco, CA, USA: USD 500 - 600
Palma de Mallorca, Spain: USD 400 - 500

Request a quote

custom-made hardtop request
Choose the unit *
Choose design *

Switching from biminitop to hardtop

made easy

We build our hardtop in a way to make it easier for you to set it up. If you already have a bimini top, you can replace the fabric and fix it on the underlying frame. In a short time, your boat is ready to go.

Please note we don't offer the support frame for the hardtop. The best way is to ask your local bimini top builder to make the framework.

How to install your boat hardtop

how to install your hardtop

Use your existing Bimini top structure or build a new one

It is very important that an experienced Bimini builder is checking if the existing frame and the related fixing points to the boat are strong enough to withstand the force created from the new permanently fixed hardtop during full speed under strong wind and wave conditions. If the frame and fixing points are strong enough, the hardtop can be fixed with a minimum of 6 points to the frame. We are using stainless steel split jaw slide fittings, which can be hinged over the existing tubes without dismantling or cutting. Each split jaw slide is connected to a 2´ round stainless-steel base plate, which will be fixed to the GRP hardtop onsite. The drilling and the fixing of the 2’ round base plate need to be done onsite and shall be done by a professional installer.


your boat with a hardtop


Ladenstein Yacht Co., LTD.
Soi Ongkharak 15,
Samsen Road Thanon Nakhon Chaisi Road, Thailand, Bangkok,


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