Made in the USA • Patented • Proven Worldwide
What Is the FinCap®?
The patented, non-metallic MAKO FinCap® is a stay-in-place concrete screed chair designed to support a nominal 1-1/2" (40 mm) galvanized screed pipe (1.5" ID / 1.9" OD), schedule 40 or higher.
Its patented internal “fins” hug the mounting structure so the chair will not bounce off rebar or rod during concrete placement.
Designed For
- Slab-on-grade construction
- Elevated slabs
- Concrete overlays
- Vapor barrier slabs
- Bridge decks and infrastructure projects
- Super flat floors requiring FF/FL compliance
- Sand or rock sub-grade
- Infrastructure and heavy-duty industrial floors
Why Contractors Choose It
- Will not bounce off mounting structure during placement
- Virtually indestructible under normal placement conditions
- 100% No Breakage Money Back Guarantee
- Non-conductive and non-corrosive for extreme environments
- Compatible with hand and mechanical screeds
How It Works
- Set your grade. Run a string line or laser at finished slab elevation.
- Choose your mounting structure. Use 1/2" rebar, all-thread, or similar (3/8"–5/8" also works). The internal fins in the chair grip the mounting structure and hold it in place.
- Load the assembly. Insert mounting structure into the FinCap, then place the MAKO Driver over it.
- Drive to height. Drive with a mallet until the Driver marker aligns with the string line. Now your screed supports are set at the proper height to accept the screed.
- Repeat spacing. Install screed supports every 3–4 feet along the screed run.
- Set your screed rail. Place 1.5" ID/1.9” OD screed pipe on the FinCaps. The top of the rail is automatically at finished grade. (A 2” or 1-1/4” screed pipe works as well but the stringline needs to be adjusted.)
- Place and screed. Strike off concrete with hand or mechanical screed, slide screed rail along screed chairs, fill the void with mud, and bull float over.
- Leave in place. FinCaps stay embedded in the concrete—no removal, no disruption to the slab.
Key Specifications
-
Supports: 1-1/2" ID / 1.9" OD galvanized screed pipe (Schedule 40 or higher)
-
Fits Mounting Structures: 3/8" to 5/8" (1/2" recommended)
-
Overall Height: 2.65"
-
Minimum Slab Thickness: 3.65" (92 mm)
-
Spacing: 3–4 ft depending on conditions
-
Installation Tool: MAKO Driver
-
Material: Impact-resistant medical grade polypropylene
- Made in USA
Frequently Asked Questions
What size mounting structures fit the FinCap?
The FinCap fits 3/8" to 5/8" mounting structures, with 1/2" recommended.
What pipe size does the FinCap support?
The FinCap supports nominal 1-1/2" galvanized screed pipe (1.5" ID / 1.9" OD), Schedule 40 or higher.
Can the FinCap be left in the slab?
Yes. FinCaps are designed as stay-in-place forms and remain embedded in the slab.
How far apart should supports be placed?
Spacing is typically every 3–4 feet depending on screed length and sub-grade conditions.
Can it be used with hand and mechanical screeds?
Yes. The FinCap is compatible with hand and mechanical screeds.
Downloads
FinCap Product Data Sheet
