Estimated Interim Fin.Stmts.

COMPAGNIE DE SAINT-GOBAIN
22 July 1999


FIRST HALF 1999 NET INCOME
EXCLUDING CAPITAL GAINS (ESTIMATED)
E468 million, or FF 3,070 million (+10.6%)

The Group's consolidated financial statements for the first half of 1999
reflect the consolidation of Essilor and processing companies in the Flat Glass
Division from January 1, 1999 for the first time.

For added clarity, key consolidated figures for the first half of 1999 are
also presented in Appendix 1 excluding the consolidation of Essilor and   
Flat Glass processing subsidiaries.

Consolidated net income  of the Saint-Gobain Group for the first half of 1999 is
estimated at E882 million (FF 5,786 million), a 67.7% increase relative to the
first half of 1998. This includes the capital gains resulting from the partial
unwinding of cross-shareholdings with the Vivendi Group.

Excluding capital gains from disposals, net income  amounts to E468 million (FF
3,070 million), up 10.6% compared with the first half of 1998.

The estimated first half consolidated financial statements were reviewed by the
Board of Directors at its meeting of July 22, 1999 and include the following:

                                     1st half 1999             1st half 1998
                                         estimated
                                    in Euro     in FF       in Euro    in FF
                                    millions    millions    millions   millions

Net sales                            10,960      71,893       8,795     57,691
Operating income                      1,115       7,314         879      5,766
Dividend income                          31         203          49        321
Interest & other financial charges net (131)      (859)       (142)      (932)
Non-operating costs                     (84)      (551)        (57)      (374)
Income before tax and before profit 
on sale of non-current assets           931      6,107         729      4,783
Profit on sale of non-current assets    538      3,529         137        899
Income taxes                           (454)    (2,979)       (287)    (1,885)
Amortization of goodwill                (65)      (426)        (50)      (326)
Group's share in net results of 
associated companies                     17        112          43        282
Net income before minority interests    967      6,343         572      3,752
Minority interests in consolidated 
    companies                           (85)      (557)        (46)      (304)
Net income                              882      5,786         526      3,448
Earnings Per share (in E and in FF)   10.14      66.53        5.83      38.23
Net income excluding net results of 
sales of non-current assets            468       3,070         423      2,773

Cash flow from operations            1,121       7,353         991      6,499
Capital expenditure on plant and
  equipment                            653       4,283         563      3,695
Investments in securities            1,878      12,319         577      3,786
Net indebtedness                     5,826      38,216       3,299     21,641

These satisfactory performances, in line with the Group's 1999 objectives, stem
from the development and improved profitability strategy  implemented by the
Group in its three operating sectors:  Glass,  High-Performance Materials
and Housing Products (see appendix 2).

The Glass Sector felt the benefits of both sustained demand in all its
business lines and price increases in the Flat Glass and Insulation Divisions.
Profitability shows a good improvement due to the above and cost-reduction
programmes implemented in recent years.

The,High-Performance Materials and Plastics Sector   recorded a strong increase
in sales and operating income on an actual structure basis, due to the 
consolidation of Essilor. On a comparable  structure  basis, however, this
sector's  operating  income declined  slightly relative to the first half of
1998, as a result of a slowdown in the Industrial Ceramics division.

In the Housing Products Sector the Group's successful development policy  and
the buoyant construction market in France and the United States more than 
offset the sharp drop in activity in the Pipe Division, leading to a
significant rise in both sales and operating income.

Group Sales  increased by 24.6% on an actual structure basis.  On a comparable
structure basis and excluding the consolidation of Essilor and Flat Glass
processing subsidiaries, sales slid back 2.3% in euro but were up 0.3% in
local currencies.  Selling  prices (unadjusted) rose slightly over the entire
half-year,  driven by the  recovery in the Flat Glass, Insulation and Building 
Materials Divisions since the beginning of 1999.  Sales volumes were up in the
United States but dipped slightly in Europe due to the fall-off in activity in
Industrial Ceramics and Pipes.

The breakdown of sales is as follows:France (including total sales for Essilor) 
40.6%; other European countries:  31.4%; Americas and Asia: 28%.

Operating Income  increased 26.8% and represented 10.2% of sales, against  10%
in the first half of 1998. Excluding the consolidation of Essilor and Flat
Glass processing subsidiaries,  operating income rose 10.6% and represented
10.3% of sales.

Profitability improved in France and in the Americas and Asia,  but declined
slightly in other European countries, mainly as a result of a slow-down in the
United Kingdom.

Income before tax and before profit on sales of non-current assets rose 27.7%,
due to higher operating  income.  The lower net interest charges compensated
the drop in dividend income (resulting from the unwinding of cross-shareholdings
and the consolidation of Flat Glass processing subsidiaries) and a rise  in
non-operating costs  to E84 million (1998 = E57 million) or FF 551 million
(1998 =  FF 374 million), stemming from the restructuring or termination of   
operations in certain business units.

Profit on sales of non-current assets  amounted to  E538 million (FF 3,529 
million) mainly from the sale on April 30,1999 of 4.7 million Vivendi shares.

Net income  amounts to E882 million (FF 5,786 million), up 67.7% relative  to
the first half of 1998.  Based on the total number of issued shares at June
30, 1999 (86,955,234 shares) following the cancellation of 5% of share capital
on June 24, 1999, earnings per share amount to E10.14 (FF 66.53) against
E5.83 (FF 38.23)  for the first half of 1998 (90,192,205 shares).

Excluding net profit on sales of non-current assets, net income totalled
E468 million (FF3,070 million), 10.6% more than the  1998 first-half figure of
E423 million (FF2,773 million)  Based on the total number of issued shares at
June 30  (86,955,234  shares), earnings  per share amounted to E5.38 (FF 35.30)
against E4.69 (FF 30.75) for the first half of 1998 (90,192,205 shares).

Cash flow from operations  was E1,121 million (FF 7,353 million), up 13.1%.
This represented 10.2% of sales against 11.3% in 1998. Before the tax charge
of E124 million (FF 813 million) on profit from sales of non-current assets,
cash flow from operations amounted to 1,245 million (FF 8,167 million).

Capital expenditure   totalled E653 million (FF 4,283  million) against E563
million (FF 3,695 million for the first half of 1998.  It represents 6% of
sales against 6.4% in 1998.  Excluding the consolidation of Essilor and Flat
Glass processing subsidiaries,  capital expenditure was unchanged compared with
the first half of 1998,  at E552 million (FF 3,621 million).

Investments in Securities   amounted to E1,878 million (FF 12,319 million),
including E510 million (FF 3,345 million) for the acquisition of the balance
of Poliet shares and E644 million  (FF 4,224 million) for the buy-back of
4,120,000 Compagnie de Saint-Gobain shares.

Net indebtedness  amounts to E5.8 billion (FF 38.2 billion) at June 30,1999.

The analysis by geographical area  shows continuing good performance in North
and South America, as well as an improvement in results in most European 
countries, with the exception of the United Kingdom. 

Outlook:   Based  on the sustained good levels of activity in its various
business lines, the Saint Gobain Group confirms its objective for the full 1999
year of at least 15% growth in net earnings per share.

Investor Relations Department
Tel: Florence TRIOU +(33) 1 47 62 45 19
Tel: Lounis BEKKAT  +(33) 1 47 62 32 36

Fax: +(33) 1 47 62 50 62

APPENDIX 1:  KEY CONSOLIDATED FIGURES FOR THE FIRST HALF YEAR 1999 
             BEFORE THE CONSOLIDATEION OF ESSILOR AND THE FLAT GLASS
             PROCESSING SUBSIDIARIES

                               S1 1999 estimated    S1 1998
                                                                       Movement
                             Millions    Millions    Millions  Millions
                             of Euro      of FF      of Euro   of FF     %
                             
Sales                         9,472       62,132       8,795  57,691     7,7%
Operating Income                972        6,376         879   5,766    10,6%
Dividend Income                  36          236          49     323   -26,5%
Interest & other financial 
         charges, net          -106         -695        -142    -932   -25,4%
Non-operating costs             -79         -518         -57    -374    38,6%
Income before tax, before 
profit on sale of non-current 
assets                          823        5,399         729   4,783    12,9%
Profit on sale of non-current 
assets                          538        3,529         137     899   292,7% 
Income taxes                   -416       -2,729        -287  -1,885    44,9%
Amortization of goodwill        -51         -335         -50    -326     2,0% 
Group's share in net results 
of associated companies          45          295          43     281     4,7% 
Net Income from consolidated 
subsidiaries                    939        6,159         572   3,752    64,2%
Minority Interests              -46         -301         -46    -304     0,0% 
Net Income                      893        5,858         526   3,448    69,8% 
Earnings per share 
(in euro and FF)             10,270       67,370        5,830 38,230    76,2% 
Net Income excluding 
   capital gains                479        3,142          423  2,773    13,2% 
Cash flow from operations       986        6,468          991  6,499    -0,5% 
Capital expenditure on 
plant and equipment             552        3,621          563  3,695    -2,0%
Investments in securities     1,878       12,319          577  3,786   -99,7%
Net Indebtedness              5,240       34,372        3,299 21,641    58,8%

APPENDIX 2: RESULTS BY ACTIVITY SECTOR AND DIVISION
            (In Millions of Euro)

1 SALES                                          Movement on     Movement on a
                             S1 1998 S1 1999     actual          comparable
                                                 structural      structural
                                      estimated  basis           basis

GLASS(1)                      4,095    4,962       +21,2%         +2,0%
Flat Glass                    1,158    1,808       +56,1%         +3,4%
Insulation & 
 Reinforcements               1,209    1,347       +11,4%          +4,5%
Containers                    1,729    1,808        +4,6%          -0,9%
HIGH-PERFORMANCE MATERIALS(1) 1,453    2,204       +51,7%          -5,2%
Industrial Ceramics &  
  Abrasives                   1,453    1,384        -4,7%          -5,2%
Essilor                           0      820         n.a.            n.a.
HOUSING PRODUCTS(1)           3,300    3,885       +17,1%          +1,0%
Building Materials            1,071    1,229       +14,8%          +9,8%
Building Distribution         1,525    1,970       +29,2%          +7,5%
Pipe                            772      744        -3,6%         -24,0%
INTERNAL SALES                    0      -71                         n.a.
GROUP                         8,795   10,960       +24,6%           0,3%

(1) Including Inter-division eliminations

11. OPERATING INCOME                                 Movement on 
                               S1 1998  S1 1999      actual strucural
                                                     basis

GLASS                             387     510         +31,8%
Flat Glass                        104     154         +48,1%
Insulation & Reinforcements       116     159         +37,1%
Containers                        167     197         +18,0%
HIGH-PERFORMANCE MATERIALS        187     278         +48,7%
Industrial Ceramics and Abrasives 187     170          -9,1%
Essilor                             0     108           n.a.
HOUSING PRODUCTS                  305     330          +8,2%
Building Materials                116     148         +27,6%
Building Distribution              75     118         +57,3%
Pipe                              114      64         -43,9%/
OTHER                               0      -3          n.a.
GROUP                             879   1,115         -99.9%

111. CASH FLOW                                       Movement on 
                               S1 1998  S1 1999      actual strucural
                                                     basis

GLASS                             513     622         +21,2%
Flat Glass                        141     198         +40.4%
Insulation & Reinforcements       151     181         +19,9%
Containers                        221     243         +10,0%
HIGH-PERFORMANCE MATERIALS        186     262         +57,8%
Industrial Ceramics and Abrasives 166     157          -5,4%
Essilor                             0     105           n.a.
HOUSING PRODUCTS                  316     367         +16,1%
Building Materials                122     188         +37,7%
Building Distribution              85     115         +35,3%
Pipe                              109      84         -22,9%
OTHER                              -4    -130          n.a.
GROUP                             991   1,121         -99.9%

IV. CAPITAL EXEPENDITURE ON PLANT & EQUIPMENT
                                             
                           S1 1998  S1 1999     Movement on actual
                                    estimated   structural basis

GLASS                          368     384      +7.1%
Flat Glass                      78     152     +94,9%
Insulation & Reinforcements    133     127      -4,5%
Containers                     157     115     -26,8%
HIGH-PERFORMANCE MATERIALS      59     101     +71,2%
Industrial Ceramics and 
Abrasives                       59      48     -18,6%
Essilor                          0      53        n.a.
HOUSING PRODUCTS               136     158     +16,2%
Building Materials              57      70     +22,8%
Building Distribution           44      60     +36,4%
Pipe                            35      28    -20,01%
OTHER                            0       0       n.a.
GROUP                          583     653     +16,0%